Other orders - Trading robot/indicator debugging - in progress

Here is the details of the project. I want to create an automated trading algo with my strategy for ninjatrader platform. All the project details will be sent to you

Read from the expert setup data a sequence of comma-delimited lot sizes kept in an otherwise unused field and insert the "next" one in the lot size data field after an order is placed. Goal is to prevent "FIFO" rejections that occur when the same lot size is used for more than 1 existing order