[TO_REVIEW] Using global variables instead of number

[YanisLalou]

• Using global variables instead of number
• Solution for Issue #67 (Add a condition to mask labels depending on the existence of a transform method or not)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (268c018) 86.24% compared to head (12f6816) 86.86%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #68 +/- ## ========================================== + Coverage 86.24% 86.86% +0.61% ========================================== Files 37 38 +1 Lines 2334 2398 +64 ========================================== + Hits 2013 2083 +70 + Misses 321 315 -6 ```

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[kachayev]

This one is ready for merge as well, right? @YanisLalou

[YanisLalou]

This one is ready for merge as well, right? @YanisLalou

Yes it is