Validation at field level + yup ref

[vgjosse]

Hello,

I'm working on a Vue.js component library and I use vee-validate for the client-side validation part.
My library is based on the Composition API Custom inputs documentation page (https://vee-validate.logaretm.com/v4/guide/composition-api/custom-inputs/) with yup as a validation library.

All my validation rules are defined at the field level (useField).

I'm currently working on a component composed by two fields (two input date fields) and I need a validation rule that includes the two fields (to check that the end date is after the start date).

Below is the yup rule, I use in the useField of my second component
yup.date().min(yup.ref('startDate'), ({ min }) => The value must be > ${min})
${min} value is undefined.

I made a test using a form level validation (useForm) with
validationSchema: yup.object({
startDate: yup.date().required(),
endDate: yup.date().min(yup.ref('startDate'), ({ min }) => The value must be > ${min})
}),
and it works perfectly.

My conclusion is that yup.ref is not working with validation rules defined at field level.
Am I right or did I made a mistake ?

Thanks for your help and for the work you've made with that validation framework.
Except that issue, I've succeeded to do everything I need. Thanks.

Vincent