How can _system_selected_document_number be updated after an action is run?
**This post was created as part of a How to Service Request (SR)
Summary of the question:How can we implement functionality where an advanced modify action will run logic based on line items that have been selected using the OOTB checkbox (_system_selected_document_number). Afterwards all the selected lines should be automatically unselected. The current issue is that _system_selected_document_number cannot be modified by BML as the following error is returned when attempting to specify a blank value in a bml function: Variable name _system_selected_document_number cannot be found.
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