Relocating report file path at runtime

Hi all,

I'm using parallelmodel to test DUT in parallel.

In the PreMainSequence, I connect to the DUT in order to ask its SN and PN.

And I set these 2 parameters in this sequence by : 

RunState.Root.Parameters.ModelData.TestSockets[RunState.TestSockets.MyIndex].UUT.SerialNumber = Locals.SerialNumber

RunState.Root.Parameters.ModelData.TestSockets[RunState.TestSockets.MyIndex].UUT.PartNumber = Locals.PartNumber

I'd like to store report file in the directory Root\PN\SN\Report.xml

for that, I setup XML report model with : 

Root\\$(UUTPartNum)\\$(UUT)\\Report[$(FileTime)][$(FileDate)]$(Unique).$(FileExtension)"

When I test, the report file is stored in : 

Root\Empty_UUT_PartNum\Empty_UUT_SerialNo\Report[16 13 44][29 11 2018].xml

So it means that PN/SN settings has been made too late.

How can I proceed, please?

If possible, without modifying ReportModel

Thanks for your help.