Insert to sql server table from field from another table and varchar field -

I have to populate the recaptory table, which has two Sarika areas (valeur, categorie), should be the first of the second table (Mytable) and the other should be a simple varchar ('support'). I have tried this

  enter in rewrite (valeur, categorie) (select a different name from mytable, 'prop')  

Error found 'prop' with incorrect syntax.

  re-enter (valeur, categorie) Select different names, 'Prop from mytable'