I have one control (dropdown) called "PROJECT" where I choose jira project and then one chart where I list all issues of selected project.
Fore some reasons, in custom column of the chart table I want to insert 0s if the variable {PROJECT} is empty (when no project is selected in "projects" dropdown) and 1s if some any project is selected.
I'm using this formula in custom column:
case when {PROJECT} is null then 0 else 1 end
The formula inserts just 1s. But nothing is selected. Help me how to identify if nothing is selected in the control?