How local variables work in projects

What if I create a local and global variable with the same name?

You can create local and global variables with identical names (see Fig. 1 below), in this case local variable will always take precedence over global, within the level where it is used. If a local variable is deleted, the link to the global variable of the same name becomes active.

I created a group with local variables and placed a copy of it in the project, are the variable references related to each other?

No, when you copy an entire group, all internal references remain references to variables in the new copy of the group.

Can i use local variables in old projects?

Yes. Old projects open without errors. You can add local variables at any time.

Are local variables visible outside the group?

No, only internally. To make them visible externally, move the variable to the group properties.

Is it possible to rename a variable and update all references?

Yes. When renaming, the system will update all links within the group.

Can local variables be used in expressions?

• Yes, for integer and floating-point values.

• No - for variables of type array (there will be an error message).

Fig. 1 Example of a warning about identical variable names