I am using Dynamic Link in a grid Field. When I am clicing it is always selectin

I am using Dynamic Link in a grid Field. When I am clicing it is always selecting 1st item. What I have found that for dynamic link, if I use save List in saveInto variables then it always display 1st item. Even if I put one variable in saveInto but put in {} then it displays always 1st item. After removing {} in this case, it started working fine. But, it put limitation if I want to use List of a!save in saveInto for dynamic link. Please advise what is the issue. I am using Appian 7.9. Attached is the code for your reference.

gridDynamicLink.txt

OriginalPostID-158204

OriginalPostID-158204