Use of st_geomfromText wrapped around a UDF fails.

I have a UDF that returns a POINT if I call st_geomfromText like such st_geomfromText(ST_MakePoint( longitude,latitude)) It fails with : 10:47:31,011 WARN [org.teiid.PROCESSOR] (Worker31_QueryProcessorQueue813) TEIID30020 Processing exception for request 8nEl2/1mNvmP.18 'TEIID30328 Unable to evaluate st_geomfromText(ST_MakePoint(Longitude, Latitude)): TEIID30384 Error while evaluating function st_geomfromtext'. Originally ExpressionEvaluationException GeometryUtils.java:139. Enable more detailed logging to see the entire stacktrace. ErrorCode: 0.. SQLState: 50000 ErrorCode: 0 however, if I try st_geomfromText( concatenated with the return of St_MakePoint) it works when hard-coded. It seems that the wrapping functions with st_geomfromText is a problem? I've attached the jar gis-1.00 which is referenced by the St_MakePoint UDF