How to control the crane tsk sequence?

I want to know how to control the crane task sequence.

I attched the example model.
Three resources use one crane as transporter.
And I defined the priority in each resources differently.
But the priority can't control the crane task sequence.

What's the problem of my model?
How can I control it?

I need help.

Thanks.

Hi Syseo,

please, replace the unloadststion with a queue. A Conveyor can only receive one flowitem. Therefore only one tasksequence is dispatched in the crane system. The functionality of priority works only on more than one tasksequence in the tasksequencequeue in dispatchers (every taskexecuter is also a dispatcher).
Priority is used on selecting the next tasksequence from the tasksequencequeue after finishing the active tasksequence.

Jörg