Changing Properties of Form

[L'apprentis]

Here is a bit of my Code,
I was trying to change the property of a form from opening it from an other form but it doesn't work. What would be the apropriate method to do it?

 'Open Drawing Detail form
    stLinkCriteria = "[ItemID]=" & Me![TxtParentItemID]
    DoCmd.OpenForm stDocName, , , stLinkCriteria
  [COLOR=Red]  stDocName.AllowAdditions = False[/COLOR]

 

[Bat17]

forms(stDocName).AllowAdditions = False