Run a PowerShell script from another one

Dot sourcing will run the second script as if it is part of the caller—all script scope changes will affect the caller. If this is what you want then dot-source,

However it is more usual to call the other script as if it were a function (a script can use param and function level attributes just like a function). In many ways a script is a PowerShell function, with the name of the file replacing the naming of the function.