SAP ECC on HANA DB Schema user password Change

Hello Expert

I am using SAP ECC 6 EHP8 on HABA DB,

SAP SID= PRD

HANA SID= HDB

Both SAP and HANA DB are on the same box,

i want to Change my SAP ECC Schema SAPABAP1 users password,

I am Able to login on hana studio using SYSTEM User but i dont find this user in Studio,

please help me to know the steps to change the password,

Thanks

Sadiq