>>THISFORM.FilterCondition = THISFORM.FilterCondition +
>>' AND BETWEEN(TransDt,{' + TRANSFORM(THISFORM.TransDtBegin) + '},{' + TRANSFORM(THISFORM.TransDtEnd) + '})'
>>m.FilterCondition = THISFORM.FilterCondition
>
>It will work if SET STRICTDATE TO 0
>If SET STRICTDATE TO 1 or 2 it fails
>
>More precise expression, independendent of this setting
>THISFORM.FilterCondition = THISFORM.FilterCondition + ;
>' AND BETWEEN(TransDt,{^' + TTOC(THISFORM.TransDtBegin,3) + '},{^' + TTOC(THISFORM.TransDtEnd,3) + '})'

Yes, I used some UDF for this, but I guess TTOC ,3 will work.