Xpath syntax showing an error

I'm trying to test dynamic id's with PHPUnit so i choose to use xpath to check if the element contains the id specified, but when ever i run my test it gives开发者_如何学运维 me the error that Invalid xpath.

My xpath code is as follows

$this->click("xpath=//div[@contains(@id,'ROOT')]")

What can i be doing wrong guys?

Thanks Donald

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Try removing the @ that's just before contains.