KOReader Sync Calibre progress

Hi all,
I'm using the KOreader Sync plugin for Calibre to synchronise progress and it is synching the progress percentage as a decimal point i.e. 30% in KOReader is synchronised as 0.30% in Calibre. When I checked the field it is indeed synchronising as 0.3 in the float field.

What am I doing wrong and how can I fix this?

Thank you in advance