Prism Release 2

I applied a logic on two samples to find a keyword in product description and add warranty period and keyword according to the keywords instruct given in R anchor input. It gave me correct result but when i set to add columns based on product description it gave me wrong values. It should have given null values instead of random values.
You can use my account with input data sets to verify.
Email: zoya.rashid@smartcomputings.com
Pass: Abc@1234
Go to workflow and find a workflow named as "find replace"