How to add Caption in Popup?

Hi, guys

Hi guys!
I have recently been working with WordPress and PageBuilder plugin.
I found the “caption” field in the widget ( http://prnt.sc/e9e0ho ), and was hoping that I could get it in a popup box below the image ( http://prnt.sc/e9e243 ). But I did not.
Please tell me whether it is possible technically caption displayed in the link attribute? and make the output text hyperlink?

Best regards,
Daria