Additional field when creating an LDAP user federation in the Admin UI

I need to add and support an additional field when creating LDAP.


At this point, I have modified LdapSettingsSearching.tsx

 <FormGroup
              label={t("users-ldap")}
              fieldId="users-ldap"
              labelIcon={
                  <HelpItem
                      helpText={t("users-ldap")}
                      fieldLabelId="users-ldap"
                  />
              }
          >
              <MultiLineInput
                  id="users-ldap"
                  name="config.usersToAdd"
                  aria-label={t("users-ldap")}
                  addButtonLabel="addUser"
              />
          </FormGroup>

and extended LDAPStorageProviderFactory.java

...
.property().name("usersToAdd")
                .type(ProviderConfigProperty.MULTIVALUED_STRING_TYPE)
                .add()
...

and the field appears where it should, however after saving the component the field does not retain its value.
I am able to access this value in e.g. the onCreate method via model.getConfig().getList(‘usersToAdd’).

The value of the field is to be used by me to modify the filter field above.

What next steps should I take to be able to use the value from the field?