How to define and use global variables in VBA.

In VBA, global variables are variables that are visible and accessible throughout the entire VBA project. These variables can be defined in a module so they can be used anywhere.

In order to define a global variable, you need to declare the variable at the beginning of the module and use the “Public” keyword to specify its scope as global. For example:

Public globalVar As Integer

In the example above, globalVar is a global variable that can be used throughout the entire VBA project.

To use a global variable in a program, simply refer to it by its name. For example:

Sub TestGlobalVariable()
    globalVar = 10
    MsgBox globalVar
End Sub

In the above example, the TestGlobalVariable subroutine sets the global variable globalVar to 10 and displays a message box showing the value of the global variable.

Caution should be exercised when using global variables in VBA, as they can lead to conflicts in variable names or difficult-to-maintain code. It is advisable to use global variables only when necessary, or consider using local variables or parameter passing as alternatives.