'resume order parametrized' raises sometimes 'param_elements[i] is null'

Current Situation

• The function 'resume order parametrized' opens the list of all order parameter.
• It expects <param name="" value="" /> elements in the JobScheduler answer.
  The JobScheduler responses a <param name="" hex_value="" /> element for parameter values which includes newlines.
• For example if a job has added an order parameter via the api with spooler_task.stdout_text() as parameter value then the JobScheduler creates such a param element with a hex_value attribute instead of a value attribute. In this case JOC raises param_elements[i] is null.

Desired Behavior

JOC doesn't raise above exception