Hello kreven,
my first idea was that things were getting confused by the parentheses in the “with” part of the replace statement.
However, when I tried this on my Tamino 4.1.1.9 the update worked.
I tested with this:
update
replace input()/Employee[Id='gurayou']/Phone
with (<Phone>90</Phone>)
I’m not sure exactly what update expression you are using, because the Forum has converted some of the characters into a Smiley Face -
!
The biggest difference that I can see is that I have hotfix 9 installed. I strongly recommend that you contact your local Software AG Customer Support Center and get this hotfix too.
If that still doesn’t help, please let us know! In the Forum’s “Post A Reply” window there are a few buttons. One of them has the characters </> on - this will add “code tags” to the post. Please put your query inside the code tags to prevent the Smiley Face “problem”. 
I hope that helps!
Trevor.
#webMethods#Tamino#API-Management