How to make Variable C, the value of Variable A + B?

How do I...?
1

I’m new at using Gdevapp and would like some help.
How do i always make Variable C, the value of Variable A + Variable B
Can you be specific on what to type.

2

You need to use expressions.
You can find expressions in the expression editor when you click the black symbol next to a value field.
expression.png

In case it is a scene integer variables just type this expression as the value of C:

Variable(A) + Variable(B)

The expression is different depends on what kind of variable we are talking about:
The variable can be Integer which is store numbers only or String which store text only.
On the top of that, can be, Scene, Global and Object or a Structure. You can read more about the variables on the wiki:
wiki.compilgames.net/doku.php/gd … evariables

Just a quick help, this is how the expressions looks like for different variables:
Scene Integer variable:

Variable(A)

Scene String variable:

VariableString(A)

Global Integer:

GlobalVariable(A)

Global String:

GlobalVariableString(A)

Object Integer:

object_name.Variable(A)

Object String:

object_name.VariableString(A)

You can also convert values:

Number to String:

ToString(Variable(A))

String to Number:

ToNumber(VariableString(A))

You can find many more expressions in the editor.

3

That symbol doesn’t appear when i have to enter a value/variable.
Are you using Gdevelop instead of Gdevapp?

4

Yes, it’s GDevelop, ddabrahim noticed that the topic is on the GDevelop forum section, surely didn’t noticed that you pointed out GDevApp in the post :slight_smile:
In GDevApp, you can still use the given expression in the “Value” field, you just haven’t the expression editor to help you find the functions:

Variable(A) + Variable(B)
5

I have noticed after my reply he is mentioning Gdevapp, but yeah the expressions should work anyway :stuck_out_tongue:

6

Thanks for taking time to help me.
I figured out how to it with Gdevapp shortly after i posted.