how to automate changing password for gMSA user account for Report Server SQL DataSource

Dear PBI experts,

Pls provide advice

I faced following situation:

for my PBIX file SQL Database used as DataSource

i need to organize process of refresh data model by means of using gMSA windows domain account.

When i put gMSA account into User name Report Server asks me for gMSA password, but as username is gMSA,

i expect password for gMSA to be provided automatically. 

should i use some Power Shell script for this task to  change gMSA password automatically?

or there are some alternatives ways you may recommend to change password automatically without need of manual password changing ? 

Bst rgrds, 

Alexsandr