> For the complete documentation index, see [llms.txt](https://docs.langstack.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.langstack.com/welcome/get-started/learn-langstack/introduction-to-etl-pipeline/exercise-1-skip-customer-records/step-2-skip-records-based-on-customer_id.md).

# Step 2: Skip records based on Customer\_ID

To skip records based on the values for Customer\_ID provided by the user as StartupParameters, actions need to be defined with the shared variable StartupParameters in the “On Reading record” function.

* To define the Actions, go to the Code tab>On Reading record function and expand it. \
  To add an “Action box”, click the \[+ Action box] button.

![](/files/Qe8M1AuoMTFb1rn9Tb7v)

* To convert the value received in the Join\_Date to integer, add and define an Action in the Code tab.

![](/files/4HWCELzuuBK7abiyPSW8)

* Define the Action as follows. (This value will be used to format the Join\_Date later in the exercise):
  1. Select Action as “Update Variable”. 
  2. Select Target Value as “defJoinDay”. 
  3. Select Value as “reader.Join\_Date.toInteger()”.

![](/files/DwkMdNDfXJDWmTsxOvKG)

* To traverse the list of StartupParameters provided by the user, add and define another action as follows: 
  1. Select Action as “Traverse List”. 
  2. Select List as “StartupParameters”. 
  3. The Variable “item” is created.

![](/files/BMo5PVAXcj19YhKyKfET)

* To verify if any of the entered values in StartupParameters (read as item) match with the Customer\_ID, add and define a “Condition action” in the “Traverse List”: 
  1. Select Action as “Condition action”. 
  2. Enter the Label as “if Customer\_ID equals item”.

![](/files/kDlt4P15LKsZzVLBZzc2)

* To check if the values read in the Traverse List item match the value of Customer\_ID, add a Criteria bar in the “Criteria” tab as follows: 
  1. Select Target Value as “reader.Customer\_ID”.
  2. Select Operator as “Is Equal”. 
  3. Select Source as “item”.

![](/files/v22zVLFNtftPX6Dj8oq0)

* To define actions if the criteria is returned as True, in the Code tab>On True section, add and define the following actions: 
  1. Action: “Update Variable”, Target Value: “skipRecord”, Value: “true” (record should be skipped)
  2. Action: “Update Variable”, Target Value: “skippedReason”, Value: “Customer is not eligible for this program.” (add reason for skipping the record) 
  3. Action: “Break List traverse”(break the loop once all Customer\_IDs are traversed and verified)

![](/files/nq66pP0Nrine0DgvE5E3)