New function add-in does not show the variables

Dear all,

I am trying to create an add-in containing a function that use RegEx ot extract a group of string from a text. However, I am stuck with the fact that the variables do not appear in the function dialog (and the add-in does not work).

I have been looking around and tested various options, but to no avail. Could someone help me in this? Here are the files:
https://drive.google.com/drive/folders/0B2IEk9I1Gr4eeWZZbTNYX1drSDQ?usp=sharing

Cheers,
Pierre

Interestingly, I realised that I have the same problem with the version 0.9.4 of the NumberText extension, while the version 0.9.5 corrected it…