How to put some default text in one specific TinyMCE editor?

[arunkannath]

Tried below code:
onActivate={e=>initialiseValue(e,this.props.value)} //props.value has def text

function initialiseValue(e,val){
if(val!=""&&val!=undefined){

   e.target.setContent(e.target.getContent()+val);
}
}

The problem here is, everytime I click on tinyMCE editor field, it is putting the value over and over. I want the value to be added at first time while loading and not anymore after that. Tried onLoadContent, but it didn't fire setContent() method. Please help.

[omarchehab98]

content prop