Global variable is Nil - LUA

[Patryk Kopaczewski 3]

Hello, I have an application where if I manually turn on a light, I need to know that the light was manually turned on and not automatically by some sensor.
But I stuck at setting and reading the value of the global variable. The value printed is always Nil. Why?

 

This is the only code in the LUA scene.

 

Please login or register to see this code.

 

Help

[jgab 2,058]

Yes, that's because you need to create the global variable "GarageLightBackForced" first.

Can be done in General->Variables panel.

[jgab 2,058]

7 minutes ago, Patryk Kopaczewski said:

Hello, I have an application where if I manually turn on a light, I need to know that the light was manually turned on and not automatically by some sensor.
But I stuck at setting and reading the value of the global variable. The value printed is always Nil. Why?

 

This is the only code in the LUA scene.

 

Please login or register to see this code.

 

Help

 

You can't do this

Please login or register to see this code.

because hub.getGlobalVariable("GarageLightBackForced") returns 2 values,

the value of the variable and the timestamp when the variable was last changed.

That means that tonumber gets 2 values as input.

tonumber can get an optional second value that is the number-base for the conversion.

Now it gets the timstamp (which is a huge number) as base and it will actually throw an error...

[Patryk Kopaczewski 3]

Thank you for the explanation Jgab. So how can I get only the value of the variable?

[jgab 2,058]

Extra parenthesis around the hub call

Please login or register to see this code.

 

[Patryk Kopaczewski 3]

I added the extra parenthesis but it continues to give me:

Please login or register to see this code.

I expect instead the number "2".

Edited October 21 by Patryk Kopaczewski

[Patryk Kopaczewski 3]

Ok it works now. Thank you very much!