Not able to extract specific data from PDF

Hi @Gokul_Jayakumar , do i use multiple assign activity or matches activity for the regex expression?

Because when i use the regex expression provided in a multiple assign activity, it throws out an error stating:

RemoteException wrapping System.InvalidOperationException: Can not assign 'system.text.RegularExpressions.Regex.Matches(strInvoiceText,“(?<=Tax Invoice No : )(\d+)|(?<=Customer ID : )(\d+)”)(1).value to ‘strInvoiceNumber’. —> RemoteException wrapping System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.Parameter name: i