beremiz

Fix bug when updating data in variable panel.
wxPython4
2021-11-16, Edouard Tisserant
6cde1a3ded58
Fix bug when updating data in variable panel.

Grid event naming CHANGE->CHANGING was wrong. CHANGE->CHANGED is the way to go.
<?xml version="1.0" encoding="UTF-8"?>
<BaseParams Name="py_ext_0" IEC_Channel="0"/>