How do I setFieldValue on Boolean on loaded record

I get an error message when trying to set a Boolean custom body field to TRUE on a loaded record in SuiteScript.  The logic is basically:

fuction test()
{
var searchresults = nlapiSearchRecord('salesorder', 54, null, null);
for ( var i = 0; searchresults != null && i < searchresults.length; i++ )
{
var searchresult = searchresults[ i ];
var record = nlapiLoadRecord(searchresult.getRecordType(), searchresult.getId() );
             record.setFieldValue('custbody_gp_calc', T);
var id = nlapiSubmitRecord(record, true, true);
nlapiLogExecution ('DEBUG', 'SAVEDID', id);
}}

I get the following error message:

ReferenceError: "T" is not defined.

or something similar on everything I try.  I've tried "T", "TRUE", "true", "1".

What am I missing?

Thanks,
Scott