How do I update my form display content in a form based on value passed from another form

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VB

I have two forms frm1.vb and frm2.vb in windows application. frm2.vb has a method OpenDetail(detailID). The purpose of OpenDetail is to load the records from database based on detailID and display in frm2. detailID can be passed from frm1.vb as well. When I pass detailID from frm1.vb, value is being passed to frm2.vb but frm2.vb is still displaying the old records based on detailID that was passed from frm2.vb.detailID passed from frm1.vb is not being displayed. My code for passing value from frm1.vb to frm2.vb is like this:

frm1.vb code to pass value to frm2.vb:::

 Dim detailInstance As New frm2()
detailInstance.OpenDetail(detailID) 

frm2.vb code:
Public Sub OpenDetail(detailID as Integer=0) 
'do something 
End Sub



When calling from frm1.vd and passing detailID to frm2.vb, value is being passed but page is rendering old result.

Any help??
Thanks in advance

What I have tried:

I have tried setting the values in frm2 constructor  from frm1 but it is not working.