cannot create required if custom validator

[ahmedthinkdifferent]

i need to check that value is exists if field exists and in another scenario wants to validate that value is exists if field exists with this custom value. { "gender":"male", "age"20 } want to check that age exists if gender exists. second scenario. { "gender":"male", "age"20 } wants to check that age exists if gender is male because females don't like others ask for their ages. Thanks

[srcnix]

Use 'check' or 'custom' property on the validator itself?