Get the approval comments into a Variable

[lupompei]

Hello,

I have a flow that need to request approval for 6 approvers and register the decisions and comments for all into an ADO. Im try to register the comments into a Variable. Problem is that when the Comments is null this step give an error. So, Ive inserted a condition (when Response comments is equal to True set the variable) and even if with comments =True, the condition gives me the no answer. 

Any suggestion to solve this? 

[Pstork1 · Accepted solution]

Put a Coalesce() function around the response comment.  Coalesce will work through the parameters from the left to the right and use the first one that isn't null.  So something like the code below will guarantee that something always gets added to the variable.  It also helps tracking which user's didn't supply comments.

Coalesce(ResponseComment,"No Comments")