$('form').validate().settings; not working Using jquery -v3.5.1

[Tandulje]

Hi...i'am using jquery -v3.5.1 and jquery.validate -v1.9.2

My code is
var settings = $('form').validate().settings;
settings.rules['UserPrincipalName'].required = true;

it gives error
VM155:294 Uncaught TypeError: Cannot set property 'required' of undefined

When i was on older version jquey -v2.1.4 then it was working fine but now not working with jquey- v3.5.1

Please give some solution on it.
I go through lots of link but not getting related to this.
Please let me know how can i fix this issue.

Originally posted by @Tandulje in #2328 (comment)

[sunny-shu]

When you create a validator, without passing any parameters, rules is an empty object('{}') by default。
so ‘settings.rules['UserPrincipalName'].required = true’ will get a exception ('VM155:294 Uncaught TypeError: Cannot set property 'required' of undefined')。 it has nothing to do with jquery or jquery-validation,This is a grammatical problem
you can pass your custom parameters when createing the validator。like this：
var settings = $('form').validate({
rules:{
'UserPrincipalName':{
'required':true
}
}
)
or
var settings = $('form').validate().settings;
settings.rules['UserPrincipalName'] ={ 'required ':true}

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