FDMEE Jython Script

I am writing Jython Script for FDMEE. I notice fdmContext["LOADID"] data type is bigdecimal.

Here, I want to get next one afte LOADID.

After searched interenet, I write BigDecimal LOADPROCESSID = fdmContext["LOADID"].Add(new BigDecimal(1))

But there is error message when execute this code.

BigDecimal LOADPROCESSID = fdmContext["LOADID"].Add(new BigDecimal(1))

              ^

SyntaxError: mismatched input 'LOADPROCESSID' expecting NEWLINE

As I am not quite familiar with Jython, may I know the correct way to add one for LOADID in bigdecimal data type.

Thanks.

James Zhang