to set a custom report into post and print procedure

Hi Expert.

i have a custom RDLC report that i need to use it when i want to post and print from warehouse shipment.
1. the main data item on that custom report is already sales shipment line
2. already set the report selection sales - shipment to this custom report id
3. and when i test, it show error like this,

can anyone please advise me what is missing ?

thanks,