Hi Hai,
Unfortunately SPT Graph tool in S32DS for Power PC v.1.1 is almost unusable for generating ASM code.
In your case - graph tool add extra comma character after vector size - .sync 256, . You can manually remove coma char after 256 in generated code - or write the code by yourself and ignore graph tool at all.
SPT Graph tool will be fixed in version 1.2
Jiri