jQuery Grid Plugin - jqGrid

The checkValues function currently passes the value and column label, but in my case I have several columns with the same label, but different names and ids, which need to validate against another column depending on the name of the column to be validated. So I propose the following change to checkValues to pass the column name in addition to the column label:

 	checkValues : function(val, valref,g, customobject, nam) {
-		var edtrul,i, nm, dft, len;
+		var edtrul,i, nm, dft, len, colnm;
 		if(customobject === undefined) {
 			if(typeof valref==='string'){
 				for( i =0, len=g.p.colModel.length;i<len; i++){
@@ -6093,6 +6093,7 @@
 		}
 		if(edtrul) {
 			if(!nm) { nm = g.p.colNames[valref]; }
+            colnm = g.p.colModel[valref].name;
 			if(edtrul.required === true) {
 				if( $.jgrid.isEmpty(val) )  { return [false,nm+": "+$.jgrid.edit.msg.required,""]; }
 			}
@@ -6147,7 +6148,7 @@
 			if(edtrul.custom === true) {
 				if( !(rqfield === false && $.jgrid.isEmpty(val)) ) {
 					if($.isFunction(edtrul.custom_func)) {
-						var ret = edtrul.custom_func.call(g,val,nm);
+						var ret = edtrul.custom_func.call(g,val,nm, colnm);
 						return $.isArray(ret) ? ret : [false,$.jgrid.edit.msg.customarray,""];
 					}
 					return [false,$.jgrid.edit.msg.customfcheck,""];