[flexcoders] Enabling or disabling individual rows

[kpjj31]

I have a list of task items that need to be completed in order. Does 
anyone know if there is a way to enable and disable rows of a datagrid 
or a repeater based on weather or not an item in the array collection 
has a particular value. I really would like to avoid alerting the user 
when they skip over a task. Any ideas would be appreciated. Thank you.