PB 12.6 GetItemString returns only a partial string

I have a DW which basically returns a large string, size is about 66K, but upon using the GetItemString(row,"col name"), I got only 32K string back.

The code is similar to this:

String a

a = dw_1.GetItemString(row, "sql_text")

messagebox("len",string (len(a)) )

I think i might have hit the limit of this function as I understand that string can accommodate much more than 32K length.

Any advise or work-around or solution is appreciate it since now I have to go out of PB to another application in order to obtain the whole string.

Thanks.