how to increase xms and xmx size in message-processor

[rohanjangid]

hi folks

i want to increase xms and xmx size 

by default it is min 512m and max 2048m now i want to change this min to 1024m and max to 4096

i am following this 2 article

https://www.googlecloudcommunity.com/gc/Cloud-Product-Articles/Apigee-Private-Cloud-Performance-Opti...

https://www.googlecloudcommunity.com/gc/Cloud-Product-Articles/Java-Xmx-Xms-for-Message-Processor/ta...

and also i installed jconsole for heap monitoring 

so in vm argument is showing heap min and max file 

so i followed 

https://www.googlecloudcommunity.com/gc/Cloud-Product-Articles/Apigee-Private-Cloud-Performance-Opti...

this article and done same steps but still heap size is not increase

thanks for any guidance or help