[AccessD] Single and Double Inverted Commas!

  I am getting too old and have been away from programming far too long
  I never have understood the use of " and ' completely
  Could someone please correct this for me,
  Me.MonTotDBAdmin.ControlSource =
  and what I want it to equal is
  =DSum("DCAdminEventTime","qryIG_Mon") 
  but with the IG being replaced with strInitials
  My attempt with strInitials="EM" came out as =DSum('DCAdminEventTime','qryEM_Mon') and wouldn't work
   
  Thanks 
  Chris

 
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