# Checking variables
**URL:** https://discussions.unity.com/t/checking-variables/657206
**Category:** C# & .NET
**Tags:** Scripting
**Created:** [March 3, 2017, 11:18pm UTC](https://discussions.unity.com/t/checking-variables/657206 "2017-03-03T23:18:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@milo55545](https://discussions.unity.com/u/milo55545)
#### Post date: [March 3, 2017, 11:18pm UTC](https://discussions.unity.com/t/checking-variables/657206/1 "2017-03-03T23:18:08Z")
I have a question, in C#, if I try to check if my boolean variable “holding” is true, but it says "the name ‘holding’ does not exist in the current context. This might be a stupid question, but here is the code:
```csharp
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Pickup_cube : MonoBehaviour {
// Use this for initialization
void OnMouseDown () {
bool holding = true;
}
// Update is called once per frame
void OnMouseUp () {
bool holding = false;
}
void Update () {
if (holding == true) {
}
}
}
```
---
### Author:  [@Ian094](https://discussions.unity.com/u/Ian094)
#### Post date: [March 4, 2017, 12:03am UTC](https://discussions.unity.com/t/checking-variables/657206/2 "2017-03-04T00:03:38Z")
Declare the variable at the top of your script:
```csharp
public class Pickup_cube : MonoBehaviour
{
public bool holding;
void OnMouseDown()
{
holding = true;
}
void OnMouseUp()
{
holding = false;
}
void Update()
{
if(holding)
{
}
}
}
```
---
### Author:  [@milo55545](https://discussions.unity.com/u/milo55545)
#### Post date: [March 4, 2017, 12:04am UTC](https://discussions.unity.com/t/checking-variables/657206/3 "2017-03-04T00:04:34Z")
Thank you!!