Changes in Data cache recommendation

Dear All,

We have got recommendation to change parameters default data cache, default data cache (16K), wash area (16K), default data cache (128K), wash area (128K) to a default  value and we are new to sybase database

By using parameter sp_cacheconfig "default data cache", "____" we can change value but will this change for 16K and 128K or we need to change by separate commands. Kindly advice

Thanks and Regards,