Change the accuracy of fields

[Nikon]

There are several fields with 1 decimal place.
Is there a way to convert selected fields with 1 decimal
place into fields with 2 decimal places without losing the connection of fields with objects?

The field is 1 decimal place
%<\AcExpr (3.1416*%<\_FldPtr 1317270971888>%^2/4*0.0785*%<\_FldPtr 1317270971632>%*%<\_FldPtr 1317270971472>%/10000) \f "%lu2%pr1">%

The field is 2 decimal places
%<\AcExpr (3.1416*%<\_FldPtr 1317157078864>%^2/4*0.0785*%<\_FldPtr 1317157078096>%/10000) \f "%lu2%pr2">%

fields.dwg