B4J Question How to access class properties in a background worker?

'--- Main code ---
Sub Process_Globals
 Public EmailMsgs1 As clsEmailMsgs
 ...
End Sub

Sub AppStart (Args() As String)
    ...
    srvr.AddBackgroundWorker("clsEmailMsgs") 
    StartMessageLoop
end sub


'--- clsEmailMsgs Code ---
Sub Initialize
 Main.EmailMsgs1 = Me
End Sub

'--- Module1 Code ---
if Main.EmailMsgs1.Running=False then    'How can I rewrite these lines using "Wait For"?
  Main.EmailMsgs1.Running = true
  Main.EMailMsgs1.StartEmailing
end if