Hello ..
I have a tp to submit after some hrs .. I was working on this  tp all week and I can not find a solution
  this problem is to make a DDE link between two excel file "Server and Client"
the server contains a scroll bar that displays a value between 1 100 and in range ("A1"),

4 contains the client control button
Walking to boot the link

stop to stop

Reset to delete all

parametrage and that opens a userform containing 3 checkbox for sampling time (1 sec, 2 sec and 5 sec), a close button to exit userform and two space a file server that indicates the location and the other contains the cell number to read and copy

the values are successively copied in column A

and a histogram in the client file