Edit variables in bulk does not work

according to

Edit variables in bulk

To edit multiple variables at once:

1. Open any collection from the Variables modal.
2. Select multiple variables by using keyboard shortcuts:

• Hold ⌘ Command / Control and click to select individual variables
• Hold Shift and click to select a range of variables

3. Right-click a selected variable and click Edit variables.
4. From the Edit variables modal, you can:

• Scope variables, if supported by the variable type
• Hide variables from publishing

but when I try that it deselect all but the single variable that is right clicked. Any soution?
thanks!
-a