"xtype" : "ColumnModel",
"header" : "BCC Group",
"width" : 400,
- "$ renderer" : "function(v) { return String.format('{0}', v); }",
+ "$ renderer" : "function(v) { return String.format('{0}', v ? v : ''); }",
"$ xns" : "Roo.grid",
"Boolean sortable" : true,
"* prop" : "cm[]",