variant configuration planning - no scheduling calculation

[jfs71]

Hello,
I am using VC with strategy 56 to plan requirements VSE type. When filling the planning characteristics into MD61 in the configuration support point., and making calculations at Bom level based on these figures, the quantity of my BOM is well updated in my planned order issued from MRP (VP type). I used dependency: stpo-menge = mdata stpo.menge * $root.characteristicA_value , where $root.characteristicA_value is the value I enter in MD61 in the configuration support point.

Using the same kind of dependency for my routing (plpo_vgw01 = mdata plpo_vgw01* $root.characteristicA_value ), scheduled operation times are not updated in my planned order. Calculation is not done for operations, but it is done for components. (even by running MRP with scheduling parameter "2").

Thanks for your inputs