AEM 6.4 - Style tab is empty in dialog
I am trying to setup styles for text component. Created a required design configuration and dialog changes but I could not see anything in Styles tab. It is just empty
Design configuration :- /etc/designs/testStyle

Dialog Changes

Added cq:designPah with value /etc/designs/testStyle in content(jcr:content)
Is there any additional configuration that we need to do to bring the styles tab?