Why it's doesn't work?

ive got a problem with connections dynamic material with get vector parametr value. they doesn’t match.

Yeah, I had that too at first. The problem is there are two functions with the same name. To get the correct one, you need to pull a wire from Dynamic Material and create a Get Vector Parameter Value node that way.

Alternatively, untick the Context Sensitive box in the node creation menu. That’ll bring up two options for the node and you need to pick the second one with the tooltip “Get the current MID vector parameter value”.

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