work on ui

src/gui_qt/fit/fitfunction.py

@@ -128,7 +128,7 @@ class QFunctionWidget(QtWidgets.QWidget, Ui_Form):
 
         self.newFunction.emit(idx, cnt)
 
-        self.add_function(idx, cnt, op, name, col)
+        self.add_function(idx, cnt, op, name, col, param_names=self.functions[idx].params)
 
     def add_function(self, idx: int, cnt: int, op: int,
                      name: str, color: str | tuple[float, float, float] | BaseColor, **kwargs):
@@ -141,6 +141,7 @@ class QFunctionWidget(QtWidgets.QWidget, Ui_Form):
             qcolor = QtGui.QColor.fromRgbF(*color)
         else:
             qcolor = QtGui.QColor(color)
+
         self.functree.add_function(idx, cnt, op, name, qcolor, **kwargs)
 
         f = self.functions[idx]