Compatibility with FillPDF (stamp png image on pdf)

hey, i got the errors out on the previous "bug" by adding the "@" symbol to the front of the statements and now the signature field is working ok- or so it seems anyways. what im basically doing is creating a system that overlays your signature field png files onto a pdf via a pdf template filler. i have every field mapped out and good to go. the only thing im missing is this signature and i can launch. currently, the signature field is outputting json code with co-ordinates attached. how do i go about changing this out for the png and having it overlay onto the specified field? its getting mapped to the right spot- thats not the problem. the problem is the raw output its giving me. attached of course is a screenshot so you can better understand my issue- pictures also enunciate more clearly than any type ever could.