I successfully able to create conditional show of Text box which more looks like a popup based on click of button but i want to add a close button to the text box so that when i click on close the text box should disappear(Hidden) .
Add a close button with Action set the variable to 0 (for the variable which you are using to show the Text object). This will hide the text object. To hide the Close button use the same variable in the
Layout -> Show Conditional option of the close button.