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in this video lets take a look at Crossfield validation so far we have seen how to validate focusing on a single form control but sometimes you might need to compare values across two different form controls to perform the necessary validation for our example lets perform Crossfield validation with the password and confirm password fields we need to ensure that confirm password is equal to password for Crossfield validation we again have to create a custom validator so in the shared folder Im going to create a new file password dot validator dot TS just like the username validator lets begin with a function that accepts a control as a parameter and returns an object or nun based on whether the validation passed or failed so a function named password validator which accepts one parameter which is the form control and returns either an object or null now what you have to make note off with Crossfield validation is that the control parameter does not refer to an individual form contro