It work just fine make sure your on Beta5F. Capturing the pikachu doesn't do anything capturing the Dialga, Palkia, Giratina.
Did you go to Johto and finished Ruins of Alph sidequest? if so, backout the ruins and you will find the Key out then go back to Fusion Resort on Serenity Isle, go to top floor 5F.
Did you go to Johto and finished Ruins of Alph sidequest? if so, backout the ruins and you will find the Key out then go back to Fusion Resort on Serenity Isle, go to top floor 5F.