To create a variable in the default variable set
- Select the Configuration > Variables.
The default variable set is displayed with all available variables in the upper part of the document view.
 - 
Click
in the upper view's toolbar.
 - Edit the variable's properties.
 - Save the changes.
 
To create variables from connection parameters
- Edit the system connection properties.
For more information, see How to edit system connection properties.
 - Open the Connection parameters view.
 - Select the parameter whose value should be converted and click Convert category.
This button is not available if the parameter has already been converted into a variable. The variable name is displayed instead.
 - Save the changes.