Is there any way to execute Merge Slice job using business rule?

Summary:

Is there any way to execute merge slice functionality using business rule? I know that we can use RestApi groovy rule to execute the same, however we need to create a local connection with credentials.

Due to this connection there will be a dependency to reset password/maintain that connection details in the application. To avoid this dependency I am looking for another way (not epmautomate) to run this.

My requirement - when i delete data from the input form it leaves 0, not blank in the cell. I would like to get rid of these 0 from the form.

If i run the Merge Slice Job from jobs - it is clearing 0 from the cube and fulfil my requirement. However looking to achieve the same without any epmautomate, or restApi call.