Power on server is not working

[Talhashahar]

Python 3.10
Ucscsdk version 0.9.0.3
Windows 10

Try to power on blade with following code
Handler = UcsHandle(ip=....)
Dm = Handler.query_dn("compute/sys-1234/...")
Dm.attr_set("oper_state", "up")
Handler.set_mo(Dm)
Handler.commit()

I don't get any exception or information from this method (commit) and the server is not power on or any change.