Hi,

In my wix file, I cannot check if an environment variable is defined. The 
following code does not work. The ifdef statement never returns TRUE even when 
the environment variable is defined and I can use its value in my code.

<?ifdef $(env.MyEnvVar) ?>
      <?define MyVar = $(env.MyEnvVar) ?>
<?else?>
      <?define MyVar = "MyDefaultValue" ?>
<?endif?>

As it is clear from the code, I want to use this code to assign some default 
value to a variable if an environment variable is not defined. Is there any way 
to do that?

Thanks,
Afshin

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