Filter report from combo-boxes on form

Hey,

I wanted to filter a report rtp_ReportProjects from the form frm_FilterReport. On this form there are 5 combo boxes and I wanted that once the user chooses a value in one or a few / all combo boxes the report generates only those records which match the selected values in fields City, CourtType, Intervention, ProjectStatus, Work (the 5 combo boxes).

For example, if I choose a City: Belgrade I would want only that record on the report which matches Belgrade.

I inserted a button OPEN REPORT; so on the event “on click” I wanted to run the Filter of Report.
Any ideas for the CODE?

Thanks!
27043271Filter-report-17.05.11.accdb