Error in the activity "write line"

[william.coulson (Will Coulson)]

Hi @yulya,

As @Srini84 has said, the variable you are logging is null.

Try running your code in Debug, allow the error to occur and then look at the Locals panel for your null variable

See below a link for a solution of the same error

Assign activity - Object reference not set to an instance of an object

Hi @ovidiu_2088, As @Jobin_Joy mentioned, the error you are getting is because one of your variables is null. I would imagine it’s down to either row.item("Value") or ResultRGX being null, ResultRGX is more likely to be null. Try running your workflow in debug, allow the code to throw the Object Reference error and then look at the Locals panel for your null variable. If it’s ResultRGX, you may need to alter your Regex pattern. If it’s row.item("Value"), check that your DataTable dtData is be…