Temporary Environment Variables Between Macros

[Davider]

The environment variable settings in the following two macro codes interfere with each other.
For example, after macro M_A is executed, macro M_B outputs the value set by M_A.
(I have to restart QM to ensure that a single macro executes correctly.)

Because I frequently use temporary environment variables, I have encountered some strange issues before, which I believe might be related to this problem.

How can this be avoided? Thanks for Any suggestions or help

Macro M_A
 

Code:

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SetEnvVar "Path" "hello"
GetEnvVar "Path" _s
out _s

Macro M_B

Code:

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GetEnvVar "Path" _s
out _s

[Gintaras]

For example you can create a class that restores the initial variable value in destructor.

[Davider]

Thanks for your suggestion.  
I’m a bit confused about the temporary environment variables in QM; they don’t seem to refresh in real-time.  
I’ve tried multiple times to achieve the following PowerShell results in QM, but I couldn’t figure it out.
 

Code:

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$env:Path="world; $($env:Path)"
$env:Path
$env:Path="hello; $($env:Path)"
$env:Path

[Gintaras]

Code:

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;/exe
str s1
GetEnvVar "Path" s1
s1-"hello;"
SetEnvVar "Path" s1
GetEnvVar "Path" _s
out _s

[Davider]

Thanks for your help.
The /exe tag at the beginning of the code worked and seems to have resolved the issue I mentioned earlier.

Would it be very complicated if we avoid using the /exe tag (which generates a file) and instead use the method mentioned below? 

For example you can create a class that restores the initial variable value in destructor.

---

Using the following WinAPI function, it seems the initial value can always be retrieved.

Code:

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out getenv("PATH")

[Gintaras]

It would be a very simple class that uses GetEnvVar/SetEnvVar. Remember a variable in some member function, and restore in destructor.

[Davider]

Sorry, I still don’t have any ideas on how to solve this issue by creating this class.  

When I use `getenv("PATH")`, the value of the PATH variable still doesn’t refresh in real-time; it’s always the initial value.

Could you share the code for this feature?

[Gintaras]

I would use a class with a destructor to solve the first issue in a more convenient way.

I don't know about getenv. I would use GetEnvVar and not have the second issue.