Steps to reproduce

1. Go to Cockpit and open the batch operation page
2. Select "Set variables to process instances"
3. Add an object variable
4. Change the type of the variable to "boolean"
5. Click the "Set variables[...]" button
6. On the confirmation step, click the "show request payload" button

Observed Behavior

The valueInfo property from the former object typed variable is present

Expected Behavior

The valueInfo property is not present.

Solution

When changing a variable, rest request payload properly