Script component is not accepting blank value

HI All,

I am using exel source and script component.

When i am passing the rows which have all the values, executing properly,

But any one of value is blank then the script component throwing error like below,

[Script Component [471]] Error: System.ArgumentNullException: Value cannot be null.
Parameter name: input    at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.HandleUserException(Exception e)   
at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.ProcessInput(Int32 inputID, PipelineBuffer buffer)   
at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostProcessInput(IDTSManagedComponentWrapper90 wrapper, Int32 inputID,
IDTSBuffer90 pDTSBuffer, IntPtr bufferWirePacket)

How to rectify this error, please suggest me.

Thanks,

Anil.