Variables don't serialize into Macro Expression syntax

[thomhurst]

Given this C#

Script.Inline($"echo {variables["MyVariable"]}"),

The yaml produced is:

  - script: |-
      echo variables['MyVariable']

This doesn't work. For variables to work in string/variable interpolation they need to use Macro expression syntax.

This would be:

  - script: |-
      echo $(MyVariable)

[thomhurst]

233

[premun]

I see some nullability problems on the main build after the merge. I will do one more sanity check in the evening before releasing a new version

[thomhurst]

Hope it's all good :)

[premun]

A new version is out! 1.4.2