remove specific text variables (IDCS6)

Hello everybody,

Is it true we cannot delete text variables in InDesign? I am trying something below:

#target "InDesign"

if(app.documents.length > 0){

  var myDoc = app.activeDocument;

  var myVariables = myDoc.textVariables;

for(var i = 0; i < myVariables.length; i++){

if(myVariables[i].variableType == VariableTypes.CUSTOM_TEXT_TYPE){

    var MyTextVarName=myVariables[i].name;

if(MyTextVarName="TXT"){

    MyTextVarName.remove();//getting error here. Though when I refer to InDesign CS6 Object Reference (thanks to Jongware), function seems to be available.  Any clues

}

}

}

}

I have got work around with but I still need to delete specific text variables.

1. app.activeDocument.textVariables.item ('TXT').variableOptions.contents = "";

TIA,

Pankaj