onXLE doesn't fire

Suite and Optimus Suite 5
#1

Why might onXLE not be firing here? onRowInserted works properly.

self.grid.attachEvent("onXLE", function(a, b) { console.log("XLE"); }); self.grid.attachEvent("onRowInserted", function(r) {...

#2

Most probably your grid cannot be loaded completely.
Could you pleas,e provide with a demo link, complete demo or share with the code with your grid initialization