finPOWER Connect Cloud Configuration form; Parameter Expression Builder form may error or not update the Parameter's expression

When launching the Expression Builder from a Parameter via one of the many wizards launched from the finPOWER Connect Cloud Configuration form, an error may occur and, at best, the Parameter's expression is not updated.

For example, editing an "HTML Widget Script" item that has Parameters from a Homepage or Custom Page shows the finPOWER Connect Cloud Page Item wizard. On the "User Customisation" page, adding or editing a Parameter shows the Parameter wizard. This wizard has an "Expression" page. Clicking the "Expression Builder" button next to the text box launched the Expression Builder. Entering an expression and clicking "OK" would do nothing.