Qt for Python (PySide/Shiboken)

Hello I try to make a table with a QML Listview, the basics are working and I tried to make the columns resizable by resizing the header. I can resize the header, but I can't get it propagated to the columns I uploaded the code here: https://pastebin.com/zwE4mKiN When I resize the header, I get the event but the variable is not changed qml: Name width: 224 qml: 224 52 qml: 224 57 qml: 224 61 qml: 224 69 qml: 224 71 qml: 224 76 qml: 224 82 qml: 224 87 qml: 224 90 qml: 224 91 qml: 224 96 qml: 224 99 qml: 224 102 qml: 224 104 qml: 224 108 qml: 224 111 qml: 224 119 qml: 224 123 qml: 224 125 qml: 224 126 qml: 224 128 qml: 224 130 qml: 224 134 qml: 224 140 qml: 224 145 qml: 224 148 qml: 224 155 qml: 224 158 qml: 224 159 qml: 224 161 qml: 224 164 qml: 224 166 qml: 224 170 qml: 224 171 qml: 224 172 qml: 224 173 qml: 224 174 Variable headerWidth If someone can help me out, I would be very happy :-) BR