This is probably going to be the most simple thing, but I just can't seem to figure it out. 

I have a sendmail function, in which I want it to be triggered if a certain field DOES NOT CONTAIN a certain name. I am not quite sure how to go about putting this down in code. 

So right now, I have:

((input.Location  ==  "Toronto")  &&  (input.Department_text  ==  "Head Office")) 

and I'd like to add the criteria that input.Employee  does not contain "Celeste"

Thanks in advance!

Joy