jenkins automatiom

we are using Jenkins Cloud Bees Enterprise
Our scenario is we Have a JOB A with string parameter named(Client)to which we have to pass a single client value at a time.
And the existing JOB A cannot be modified.
As of now we almost have 90 client values that has to be passed to the JOB A one by one, to achieve this we are manually trigerring 90 jobs …so how to overcome this