passing variable value to pipeline through Groovy

Summary:

Is it possible to pass a variable value to pipeline through Groovy rule?

I have created a pipeline to run few business rules and to trigger the business rule, I have created a groovy script....I am passing the RTPs in Groovy rule and I want the business rules/pipelines to use the same variable values (values can change based on user inputs)....how can I do this in pipeline?

For example, I am passing entity RTP value as LE123 while running the groovy rule, and I want the pipeline to use the same RTP value to trigger the business rules listed in pipeline.