Edit boss-extrusion in both direction

Hello,

Does anyone knows how to edit the extrusion of the selected extruded part in both direction?

Im using this code but only direction 1 is being edited wherein both direction 1 and 2 must be updated.

            swFeat = swPart.FeatureByName("Boss-Extrude1");

            ExtrudeFeatureData2 swExtrudeFeatData = swFeat.GetDefinition();         

            swExtrudeFeatData.SetEndCondition(true, (int)swEndConditions_e.swEndCondBlind);

            swExtrudeFeatData.SetDepth(true, 3 / 1000);

            swFeat.ModifyDefinition(swExtrudeFeatData, swModel, null);

Thanks in advance.

SolidworksApi macros