How to pass a value validated in Webform to the User's profile page? There are hundreds of users on my Drupal 7 website. I don't want to manually enter the birthday value for each user in their profile. Hence why I created a webform where the user puts the user's birthday.

This value should then after validation by the current user be stored permanently in the user's profile where I created an empty birthday field.

How do I pass the value?
Using the "Webform Rules" module, you should be able to have the Rules module react on an event like "Webform submitted". So create a custom rule using this Rules Event, and then add the required Rules Actions. Here is a blueprint of these Rules Actions:


Fetch Entity by id, of type user, using the uid of the user who submitted the form (= current user).
Set a data value, for the field of the user's profile where you want to save that birthday, where the value is the birthday entered in the form.
Possibly (not 100% sure) you may also want to add Save entity, to actually save that field in the profile.


Make it right before you make it better ...

But what about a user submitting the same form again, with a different value for birthday? If you don't want that to happen, you might want to add the Flag module like so:


Flag a user after submitting the form (using Rules), using some global flag.
Improve the 1st rule above, to add a Rules Condition to verify that the user has not been flagged yet.


PS: This answer applies to D7 ...