You need a Spanish TRE for that. You also need logbook and certificate for the hours and, if the hours are flown outside JAR you will need them certified with the Apostilla de La Haya (sorry, I don't know the name in english, try to Google it). In this last case it would be easier to transfer your License to the same country as the TRE that will give you the ATPL.
IMMO, transfer your License at once to another JAR country. Most likely you will take this same option after dealing with those ignorants, this way at least you will not lose time.
More info, PM.
Cheers.