Image Button gets exported without a name

I’m currently using LibreOffice Writer to create a fillable pdf, i then use the iTextSharp to retrieve the AcroForm fields and replaced them with values.

My goal is to generate text, images, links and tables from an api.

However when i add a Image Button and specify the Name property, and then save the form and export it to a pdf - the name does not get added to the Object in the file or is identified as a AcroField by iTextSharp.

I noticed this happens also for other types like labels for example.

I only get a Name when i use a Push Button, but i can’t replace it with a transparent picture because the background color does not disappear.

Is there a workaround for this?

Thanks in advanced