Trouble with template text when updating file properties in flow

Hello all, I am hoping for some help with the following flow:

My flow tests good and it does do what I want. The problem is when I open the file, in the document property fields that have info from a document from a Sharepoint list filled in there is a bunch of code around it as well (see the 4th entry).

Any fields that are single-line text in the column properties are fine. 

Any help is muchly appreciated! 

Alternatively, if there is an easier way to get some of the fields from a Microsoft form to automatically populate a template, I would be totally open to doing this a different way! 

Thanks again! 

S.