When i start control script for some item then shutdown pol and start it again did i have to run this script again or is it running?

If its set in itemdesc.cfg as the ControlScript for the item, it should run for that item on item creation and system start for that item.

well it isnt it starts when someone identify item then is start_script(":magic:MagicControl",item)

Well you're starting it with start_script which could be a control script but isn't by POL's definition. If you always want a script to run for a certain objtype, you can use the setting in itemdesc.cfg -> ControlScript :magic:MagicControl otherwise any other way you would always have to start it yourself. You can use a start.src to start when POL starts but if you're doing it on every one of a certain item, you should use the itemdesc.cfg setting.

thx