I have problems with session variables, we have the following layers for the application that we use in this application

End_User (EU), MobileCoreWidget (MCW), MobileCoreService (MCS), CoreService (CS)

where the session variable is in the CS module and where it has its CRUD and the problem is that when the session is called by a server action, it does not return anything as if the session was empty, for this there is a previous step where you get a list of document numbers and they are saved in the session that is then requested for another process and where the session appears empty.

the process begins, with the consultation of the document history is there where all the documents are saved in a session variable (folios) in CS and part of the detail along with the document number sends it to the MCS and then to MCW to show it in a mobile screen, then the following this step is optional and depends on the client if he wants to do it in which he tries to show an extensive detail of the selected document from the MCW the number of the selected document and this reaches CS where he must filter it with the session variable that was saved in the previous step, but that's the problem, it's empty and you can't compare the data that we sent you from MCW with a session that is empty.