how to pass value of textbox from subform to main form in vb

[noorulain]

i want to pass the value of text box from a subform "concession" to a main form "student_detail" i am using the format
forms!mainform name!subform name!ftextboxname.value
to assign the textbox value to a variable
and when i want to display the result in an other textbox on same subform i use the format
forms!subformname!textbox name.value=variable name
but it is not working

[zmbd]

That is because you are not referencing the subform and contrls correctly. Please take a look here:

ACC: How to Refer to a Control on a Subform or Subreport
To refer to a control on a subform, use the following syntax:

   Forms![main form name]![subform control name].Form![control name]

To refer to a control on a subreport, use the following syntax:

Reports![main report name]![subreport control name].Report![control
   name]

It is important to note that you cannot refer to controls on a subform with the following syntax:

Forms![subform name]![control name]