Changes

30 DATA 21,10,be,11,0b,be,06,81,c3,e0,bc,af,32,2c,ae,c9

In the 664/6128/Plus, that flag is at AE2Ch. For the 464, it would need to be changed to AE45h, or, use the simplier POKE AC0Xh method on CPC464.