If clause help

Hi everybody
I have an if clause problem

example
IF (selection.count >0) then ( ) else ( messageBox "There is no objects selected, Please select objects and try again")

now problem:
so come to think having Bend modifier and i need an If clause like this:

1: If there is a bend modifier on selected objects then ( ) and if there is no bend modifier show this message else( )

2: If the specific modifier has no animation show this message else ( )

Thanks in advance