Variables Method

Gets or sets the installer variables.

[VBScript]

sVar = Installer.Variables(sVarName)

Installer.Variables(sVarName) = sNewVar

[JScript]

sVar = Installer.Variables(sVarName);

Installer.Variables(sVarName) = sNewVar;

Parameters

sVar

The returned AWinstall variable value.

sVarName

The variable name (for example, "SystemPath").

sNewVar

The new variable value.

Remarks

This method provides the access to installer variables. You may obtain the value of the built-in installer variable ("ProductName", for example), or you may create your own variables and use it later.

The method supports also Registry and Environment Pseudo-Variables. For example, Installer.Variables("ENV:USERNAME") returns the contents of the USERNAME environment variable.

Uninstall support

This action does not support uninstallation.

Example (VBScript)

In this example the script tries to create the MS Word executable using ActiveX Automation. In success, it will create the new installer variable, "MSTemplatePath", which may be used later for extracting MS Word templates.

On Error Resume Next

Set obj = CreateObject("Word.Application")

If Err.number<>0 Then

  ShowError "Can not find MS Word installed." & vbCrLf & "Cancel Install?"

Else

  Installer.Variables("MSTemplatePath") = obj.Options.DefaultFilePath(2)

  obj.Quit

  Set obj = Nothing

End If

Sub ShowError(msg)

  res = Installer.ShowMessage(msg, "System checks", vbYesNo+vbExclamation)

  If res = vbYes Then

     Installer.CancelInstall

  End If

End Sub

Example (JScript)

This example obtains and displays the path to the Windows System folder.

sysPath = Installer.Variables("SystemPath");

Installer.ShowMessage("System path is: \n" + sysPath, "Message", 0);