Dynamic data attachment expression for checking in difference group

[Kal_Lam]

Welcome back to the community, @kienl! Maybe this post discussed previously (with sample workarounds) should help you solve your issue:

Dynamic data attachment

@Adom, you could use this sample XLSForm that illustrates how to link a form dynamically within a group. Reference XLSForm (within group): Round 1 (Within Groups).xlsx (15.2 KB) Reference XLSForm (within group): Round 2 (Within Groups).xlsx (11.9 KB) We will be updating this sample XLSForm file within the article soon.