# Storing number inside a string variable

**URL:** <https://forum.kirupa.com/t/storing-number-inside-a-string-variable/327652>\
**Category:** flash\
**Created:** [March 16, 2012, 10:39pm UTC](https://forum.kirupa.com/t/storing-number-inside-a-string-variable/327652 "2012-03-16T22:39:44Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![littlea5h](https://avatars.discourse-cdn.com/v4/letter/l/3e96dc/32.png) [@littlea5h](https://forum.kirupa.com/u/littlea5h)\
**Post date:** [March 16, 2012, 10:39pm UTC](https://forum.kirupa.com/t/storing-number-inside-a-string-variable/327652/1 "2012-03-16T22:39:44Z")

</div>

For my calculator i am having trouble storing a number inside a string variable.

Calculator, Layer ‘actionscript’, Frame 1, Line 144 1061: Call to a possibly undefined method append through a reference with static type String.

```auto
var currentNumber:String ="";
function pressNumber(e:MouseEvent):void{
	       display_txt.appendText(e.target.num);
		   currentNumber.append(e.target.num);//error here
}

```

How can i resolve this??