Display a measure on Text area before any onclick event

Hi All,

     I want to display a measure on a text. and i did the following.

1) Drag and dropped a Text area

2) Create a onclick statement on text area to show [Revenue Amount]

TEXT_2.setText( "Revenue By Country" + DS_1.getData("00O2TORXSWQ6B79AU7S73XHQL", {}).value);

Above statement is working fine,  when i click on the text area its working fine.  But i want to display my measure with out clicking on it.

How can i show my measure directly on the "Text area" with out clicking o it.

Do i need to change my script? or need to use any other method?

I check may other posts and SCN Video tutorials but they are helpful to my requirement. Many posts explaining, the onclick events.

Thanks.