The Itv_var method

The Itv_var method sets and returns the values of global variables.

Method call syntax

function Itv_var (globalvar : String) : String

Globalvar – Required argument. The name of the global variable. It takes the following values:  Type – String, satisfying the rules for the names of the string parameters in the Windows registry.

Global variables are stored in the Windows registry to maintain their values after Windows restart. All global variables are stored in the registry branch  HKEY_USERS\S-1-5-21-…\Software\VMSScript\VMSSCRIPT and HKEY_CURRENT_USER\Software\VMSScript\VMSSCRIPT. To access a global variable directly from the registry, search the registry for it by its name.

Usage examples

Problem. When Macro 1 starts, save the value of the bright parameter of Camera 10 to the cam10bright global variable. When Macro 2 starts, set the bright parameter of Cameras 1 to 4 to the value of the cam10bright global variable.

if (Event.SourceType == "MACRO" && Event.Action == "RUN")
{
 if(Event.SourceId == "1")
 {
  Itv_var("cam10bright") = GetObjectParam("CAM", "10", "bright");
 }
 if (Event.SourceId == "2")
 {
  var cam10bright = Itv_var("cam10bright");
  for(i=1; i<=4; i=i+1)
  {
   SetObjectParam("CAM", i, "bright", cam10bright);
  }
 }
}