if(_out instanceof OXPath10ExpressionBPEL20){
OXPath10ExpressionBPEL20 out = (OXPath10ExpressionBPEL20)_out;
try{
if(out.isJoinExpression){
// these resolve to links
OLink olink = _cctx.resolveLink(variableName);
_out.links.put(variableName, olink);
}else{
int dot = variableName.indexOf('.');
if (dot != -1)
variableName = variableName.substring(0,dot);