# To enter negative value

**URL:** <https://forum.kirupa.com/t/to-enter-negative-value/217206>\
**Category:** Uncategorized\
**Created:** [February 24, 2007, 6:41am UTC](https://forum.kirupa.com/t/to-enter-negative-value/217206 "2007-02-24T06:41:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jorawar](https://avatars.discourse-cdn.com/v4/letter/j/8edcca/32.png) [@jorawar](https://forum.kirupa.com/u/jorawar)\
**Post date:** [February 24, 2007, 6:41am UTC](https://forum.kirupa.com/t/to-enter-negative-value/217206/1 "2007-02-24T06:41:33Z")

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hello.  
i have an input typetextbox on my stage called stakebox.i m using it in my project called matrix.  
i want negetive value to be enter by user. but i can’t do that ma own… so plz help me…  
length of that textbox is 4. i have given some code to that… i mannaged to enter dot once. but i want minus “-” to enter only one time… any in my text box “-” and “.” are covery the length of my text box. i can only write -0.0, but i want - or . to be saperate for the length…  
i want the value should be of these format…  
let zero be any value…  
-0.0;  
-.0;  
0.0;  
…  
my code are :  
\_root.\_lastLen = \_root.stakeBox.text.length;  
\_root.stakeBox.onChanged = function()  
{  
var tmp = this.text;  
var len = tmp.length; // needed for later use  
var carIn = Selection.getCaretIndex(); // for cursor consistency purposes  
if(len-\_root.\_lastLen\>1) // if paste method is used, and the pasted length is more than 1  
{  
var firstDot = tmp.indexOf(".");  
tmp = tmp.split(".").join("");  
this.text = tmp.substring(0, firstDot) + “.” + tmp.substring(firstDot);  
lenDiff = len - this.text.length;  
Selection.setSelection(carIn-lenDiff, carIn-lenDiff);  
}  
if(tmp.indexOf(".")!=tmp.lastIndexOf(".")) // normal input, or if pasted length is just 1  
{  
this.text = tmp.substring(0, carIn-1) + tmp.substring(carIn, tmp.length);  
Selection.setSelection(carIn-1, carIn-1);  
}  
\_root.\_lastLen = this.text.length;  
}