code: def _comboBoxActivated(self, index, comboBox=None):
          
          if comboBox is None:
              comboBox = self.sender()
          assert comboBox, "comboBox not defined and not the sender"
  
          blocked = self.blockChildrenSignals(True)
  
          # If one of the other combo boxes has the same value, set it to the fake dimension
          curDimIdx = self._comboBoxDimensionIndex(comboBox)
          if curDimIdx < FAKE_DIM_OFFSET:
              otherComboBoxes = [cb for cb in self._comboBoxes if cb is not comboBox]
              for otherComboBox in otherComboBoxes:
                  if otherComboBox.currentIndex() == comboBox.currentIndex():
                      #newIdx = otherComboBox.findData(FAKE_DIM_IDX)
                      #otherComboBox.setCurrentIndex(newIdx)
                      otherComboBox.setCurrentIndex(0) # Fake dimension is always the first
  
          # Show only spin boxes that are not selected
          row = 0
          self._deleteSpinBoxes(row)
          self._createSpinBoxes(row)
          self._updateRtiInfo()
  
          self.blockChildrenSignals(blocked)
  
          logger.debug("{} sigContentsChanged signal (comboBox)"
                        .format("Blocked" if self.signalsBlocked() else "Emitting"))
          self.sigContentsChanged.emit(UpdateReason.COLLECTOR_COMBO_BOX)
docs: Is called when a combo box value was changed by the user.
  
              Updates the spin boxes and sets other combo boxes having the same index to
              the fake dimension of length 1.