No trouble. The distinction Pete made is an important one, and I was lazy in my post. The name of the subform control is what is needed. That is the Name property of the 'frame' that houses the subform. It is frequently the same as the subform name, but not always.
Microsoft Access
Microsoft Access is a rapid application development (RAD) relational database tool. Access can be used for both desktop and web-based applications, and uses VBA (Visual Basic for Applications) as its coding language.
ASKER
MsgBox Forms!DCDK_ReportingInfo.E
Also this give an error:
MsgBox Forms!DCDK_ReportingInfo.D
"Ekstra_reporting" is the sub form name, the sub forms object name is "DCDK_ReportingInfo_ER".
The control name comes from a string ("ctlname").