Hi,
I have a powerapps form that feeds a sharepoint list.
The columns of my sharepoint lists are Yes/No type and I changed in Powerapps to be shown as checkbox.
Whenever the box is checked, then I do have the check mark in my sharepoint list. However, for the unchecked boxes, it doesn't show anything (which seems logic). However, I'm trying to show an X icon in this case instead of empty value. is this possible?

Where do I need to change this option? In powerapps or in the sharepoint list directly?
Thanks a lot.