I'm struggling with the problem placing quicktips tips to a grid column-model. I did the following steps to add a quicktip to the model

1. Init quicktips: Ext.QuickTips.init();
2. Specify a tooltip-attribute in column-model:
var cm = new Ext.grid.ColumnModel([{
header: 'field1',
dataIndex: 'field1',
width: 40,
tooltip: 'Tooltip text'
.....
3. Render the Grid: grid.render('grid');

But nothing happes. I also tried to set it manually with the same result. cm.setColumnTooltip(1,'TEST TIPP');

It would be nice if someone can point me to a example where its working.

Thanks,

Alex