Not exactly sure what you are trying to do here Pat. The " {{index}} " merge function is row aware and can be used in UI elements or to pass information into other processes.

You’ve probably seen this before, I’ve got a snippet to move rows up or down using an Order__c number field. In order to properly update the fields for the current row and either the row above or below to get updated values, I need to target them by their index. I’d also like to do this for many models across the org without an action sequence. With a snippet I can get the current row and model. As I said above I need to target the row above or below as well without adding something to each model to identify the row index using the merge syntax.

Can I somehow use the merge syntax of {{index}} in a snippet?

Found something from a post. Basically loop through models rows until model row equals params row and you have the index.

Created these ideas based on this post.

Could then use this to get call an Action Sequence with everything needed to execute.
This goes hand in hand with this other idea Target Row by Index and Get Index from Row.

Based on this post.