Update File Properties, why i cannot populate an image

I have a word document template inside SharePoint Document library where i have added some Document properties to it, which include:-

 

1) Text properties, such as GranteeName & GranteeAddress:-

 

 

Now using the "Update File Properties" action, i can populate the Text properties, as follow:-

 

 

but the ApproverSignature property did not appear inside the list of properties, so how i can populate the template's ApproverSignature property ?

 

I tried this using another tenant, which i have premium license on, and i can do so using the "Populate a Micrsoft Word Template" action , as follow:-

 

so cannot we do the same using "Update File Properties" action?

 

Thanks