Balt

Good question! To fill in your shape with filler text first click into the shape as if you are going to type. Then go into Insert > Fill with Lorem Ipsum and the shape will be filled with Lorem Ipsum filler text! Let me know if this works for you!

Hi when doing that it remove the text in the shape. I want to have a shape with : Title : "Type your title here". How can I do?

Hi Moza

Thanks for posting your question! Automatically inserting filler text other than "Lorem Ipsum . . ." from the Insert menu isn't currently supported in Lucidchart. Would you mind adding your idea to our feature request form? Ideas submitted to this form are passed on to the product development team for their consideration. 

As a workaround I recommend adding Title: "Type your title here" by double clicking into the shape and typing it out. I hope this helps!