How to use a process parameter to manipulate the allocation strategy in SIMATIC BATCH?

Hi all,

Currently I am struggling with achieving the same goal. I would like to know how I can use a process parameter to manipulate the Allocation Strategy in SIMATIC BATCH.

We use late-binding to automatically allocate desired source tank out of a tank farm that meets correct conditions configured by L_UnitStatus.

However, if there are more candidates available I would prefer allocating the tank with longest product remain time (based on process parameter). Previously we used the allocation strategy "longest-out-of-use" but this is not sufficient this situation. 

How can I link something that is programmed in the PLC (e.g. product remain time, highest temperature of highest level) to a Process Parameter in relation with the Unit datatype? 

Greetings,

Yannick

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