Add 2 PMString Values

Hi,

I need to add two string value. But now it get concat. Please guide me on this..

The value for

• TopMargin SplitTable -> 25 in
• BottomMarginSplitTable -> 35 in
• LeftMarginSplitTable -> 45 in
• RightMarginSplitTable -> 65 in

1. My Expected Output is 110 in
   2. But my output is 65 in45 in

PMString TopMarginSplitTable = this->GetTextData(kTopLineTableSplitWtMeasureComboBoxWidgetID);		
		PMString BottomMarginSplitTable = this->GetTextData(kBottomLineTableSplitWtMeasureComboBoxWidgetID);		
		PMString LeftMarginSplitTable = this->GetTextData(kLeftLineTableSplitWtMeasureComboBoxWidgetID);		
		PMString RightMarginSplitTable = this->GetTextData(kRightLineTableSplitWtMeasureComboBoxWidgetID);
CAlert::InformationAlert(RightMarginSplitTable + LeftMarginSplitTable);