Fix unknown variable in xact verb

[ImperatorS79]

Description

Fix #1082 .
@madoar Why did you not do it ? ^^

Ready for review

• Script tested as a regular phoenicis user and working (if you have a problem -> create as draft and ask for help).
• json-align and eslint run according to the documentation.
• Codacy and travis checked.

[madoar]

I wouldn't say I didn't do it (see #1112), I just forgot to add it to the initial PR where I discovered the issue^^

[plata]

@madoar can it be merged then?

[madoar]

We can, but it would almost certainly lead to a merge conflict in #1112 if it is ok for you I would prefer to fix the issue as part of #1112