PLZ HELP ME WITH Multithreading

[justme369]

Im going crazy with this i dont understand at all invokeee i want to run 2 subs at the same time when i click a button check 1 and check 2 are 2 subs when i click a button it calls sub pi which then calls the 2 forms but idk how.. this is the code for callin the 2 subs i want together to run

Public Sub pi() 
Dim thrMyThread As New System.Threading.Thread(AddressOf check2)
        thrMyThread.Start()
 
        Dim thrMyThread1 As New System.Threading.Thread(AddressOf check1)
        thrMyThread1.Start()End Sub 
 
Private Sub check2() 
textbox1.text="12" 
end sub 
 
Private Sub check1() 
textbox2.text="14" 
end sub

i figure it out, i just want to know if im doing it right...cuz apparently both are running at the same time..

this is the new part in the code

Dim thrMyThread As New System.Threading.Thread(AddressOf check2)
        thrMyThread.Start()

        Dim thrMyThread1 As New System.Threading.Thread(AddressOf check1)
        thrMyThread1.Start()End Sub