# @@POSITION **URL:** \ **Category:** Elements\ **Tags:** mergado-2, elements, attributes, element-path\ **Created:** [June 8, 2023, 7:57am UTC](https://forum.mergado.com/t/position/766 "2023-06-08T07:57:00Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![lehuy](https://forum.mergado.com/user_avatar/forum.mergado.com/lehuy/32/280_2.png) [@lehuy](https://forum.mergado.com/u/lehuy)\ **Post date:** [June 8, 2023, 7:57am UTC](https://forum.mergado.com/t/position/766/1 "2023-06-08T07:57:01Z")
In this post, we will learn: - [What is @@POSITION and what is it for?](https://forum.mergado.com/t/position/766#what-is-position-and-what-is-it-for-2) - [When do we use @@POSITION?](https://forum.mergado.com/t/position/766#usage-3) - [Summary](https://forum.mergado.com/t/position/766#summary-6) ## Introduction When [targeting](https://forum.mergado.com/t/element-path/753#what-is-path-to-element-2) element values, it is sometimes necessary to specify the exact position of the element value, typically for [multi-value](https://forum.mergado.com/t/what-is-a-multi-value-element/589) elements. The special attribute @@POSITION will help us when writing the path to the element. ## What is @@POSITION and what is it for? The @@POSITION is one of the [special attributes](https://forum.mergado.com/t/special-attributes/749) that we can work with in the Mergado Editor, which are part of the [Element-Path](https://forum.mergado.com/t/element-path/753) language. It is used in [conditions](https://forum.mergado.com/t/conditions-in-the-element-path/757) in [element-paths](https://forum.mergado.com/t/element-path/753#what-is-path-to-element-2), where it **corresponds to the position of the value of the [element to which it binds](https://forum.mergado.com/t/conditions-in-the-element-path/757)**, and is thus used to **target a given element position** (or multiple positions). Each element value (even an empty value) has a precise position that can be quantified by [natural number](https://en.wikipedia.org/wiki/Natural_number) (so the position cannot be negative or zero, only 1, 2, 3, …). **Example:** ```auto 8 @@POSITION = 1 4028145079671 @@POSITION = 1 https://www.url.com @@POSITION = 1 249 @@POSITION = 1 @@POSITION = 1 Material @@POSITION = 1 Porcelain @@POSITION = 1 @@POSITION = 2 Volume @@POSITION = 1 460 ml @@POSITION = 1 Mug Science Medicine @@POSITION = 1 @@POSITION = 1 url 1 @@POSITION = 1 url 2 @@POSITION = 2 url 3 @@POSITION = 3 url 4 @@POSITION = 4 ``` Example path: `IMAGES | IMAGE { @@POSITION = 3 }` [Read](https://forum.mergado.com/t/element-path/753#how-to-read-path-11): take the IMAGES element and target its [child](https://forum.mergado.com/t/nestedness/748#children-and-parents-4) IMAGE with a value in the third position. Note that most values have a position of 1. Only [multi-value elements](https://forum.mergado.com/t/what-is-a-multi-value-element/589) (in the example, the PARAM and IMAGE elements) can have a position greater than 1. ## Usage ### General The special attribute **@@POSITION is mainly used when working with multi-value elements** , since **for simple elements** (elements that are not multi-value) when writing the path to the element value **it is not necessary to specify the position** , since it is **always equal to 1** for these elements. **Example** of a simple element: ```auto 8 @@POSITION = 1 ``` The `ITEM_ID` path targets the same value as the `ITEM_ID { @@POSITION = 1 }` path. > ℹ  Mergado 1 did not work with [nested](https://forum.mergado.com/t/nestedness/748) or multi-value elements, so the special @@POSITION attribute could not be used in Mergado 1 either. At the same time, the **weakness of @@POSITION is that it only refers to a position and does not address what value is at that position**. For example, if we refer to position 2, where we **expect** the parameter Volume, it may happen that for some products we actually target the parameter Decoration, because **different products may have parameters with different order**. ![Screenshot from 2023-06-09 16-33-47](https://forum.mergado.com/uploads/default/original/1X/b77a4c3006eed0890916b1b83eca7e421166911d.png) > ℹ  If we want to target only the values of the Volume parameter, the path will look like: > `PARAM { PARAM_NAME = "Volume" } | VAL` ### Examples 1. Images: e.g. IMGURL\_ALTERNATIVE. Consider the following data: ![image](https://forum.mergado.com/uploads/default/original/1X/ca5553bea86f0f6753f748ffb8ae32148d2dda25.png) Let’s say we want to target only `image-3.png` and `image-4.png` in the rule. The path will look like this: `IMGURL_ALTERNATIVE { @@POSITION >= 2 }`. 2. Variants: e.g. `VARIANTS | VARIANT`. Consider the following data: ![image](https://forum.mergado.com/uploads/default/original/1X/72272f0e189028ddb4a6c7e720b10b9b785335bf.png) Let’s say for the second variant we want to rewrite its size XXL to S. In the rewrite rule, we write the path `VARIANTS | VARIANT { @@POSITION = 2 } | PARAMETERS | PARAMETER { NAME = "Size" } | VALUE`. This path will target the value of the Size parameter only for the second variant. ## Summary - [What is @@POSITION and what is it for?](https://forum.mergado.com/t/position/766#what-is-position-and-what-is-it-for-2) The @@POSITION is one of the [special attributes](https://forum.mergado.com/t/special-attributes/749) that we can work with in the Mergado Editor, which are part of the [Element-Path](https://forum.mergado.com/t/element-path/753) language. It is used in [conditions](https://forum.mergado.com/t/conditions-in-the-element-path/757) in [element-paths](https://forum.mergado.com/t/element-path/753#what-is-path-to-element-2), where it **corresponds to the position of the value of the [element to which it binds](https://forum.mergado.com/t/conditions-in-the-element-path/757)**, and is thus used to **target a given element position** (or multiple positions).   - [When will we use @@POSITION?](https://forum.mergado.com/t/position/766#usage-3) - For [multi-value elements](https://forum.mergado.com/t/what-is-a-multi-value-element/589), since for simple elements (elements that are not multi-value) there is no need when writing the path to the value element, because it is always equal to 1 for these elements. - **The weakness** of @@POSITION is that it **only refers to the position and does not address what the value at that position is**. So let’s be careful when using @@POSITION for parameters, categories, images, variants, etc.