Custom template on column not working as expected

Hi,

I have a custom template on a column that should set the date of that column when another column is updated (inside the same table). This template is working when we are manually changing data from object browser but not working when we are receiving changes via feed. What could be the issue here.

Custom Template Code 

If $Column1[C]:Bool$

Value = Date.Now()

End If

Overwrites checkbox is also checked.