Custom Mapping Not Saving Correctly

Hi,

I’m having issues with my fuel level values not saving correctly in custom mapping. It will save the amend value but it will not display the live data when I return back to the gauge. Going back to value property/ custom mapping would show that the amended data is saved but there is no live data. If I turn off custom mapping save it, go back and select custom mapping again live date will be available. Please look at the attached photos to help with my explanation.
Displaying Live Value.jpg
NO LIVE DATA.jpg

Issue resolved I had Fuel level set in my XML file and this was overwriting my DashBox.