Help with Flow Error

[TripleD]

I'm trying to set up a form to send me responses via a PDF document using Power Automate. I've built my first flow, but I'm getting the following error message when I test it out:

Unable to process template language expressions in action 'Compose' inputs at line '1' and column '22124': 'The template language function 'replace' expects its first parameter 'string' to be a string. The provided value is of type 'Object'.

The expression I am using is 

replace(outputs('Get_file_content')?['body'],'{submitter}',outputs('Get_response_details')?['body/responder'])

I have no idea I'm getting this error. Any help would be appreciated.

[abm]

Hi @TripleD 

If you looking to get the whole body outputs('Get_file_content')?['body']  to do a replace then you need to convert that to a string.

Use the below expression:

replace(string(outputs('Get_file_content')?['body']),'{submitter}',outputs('Get_response_details')?['body/responder'])