FindControl in Footer Template

[tropico]

I all

I've got a beautifull datalist with a ItemTemplate and a FooterTemplate

There is a link button in the itemTemplate and Id'like to change a control
in the FooterTemplate when someone click the buttonlink.

So I try to use the FindControl method in the ItemCommand event of the
datalist to access the footerTemplate control. But it always return
null...

Thansk for help