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6221 pulse generation using external digital trigger

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Hi there: I am trying to do something very basic, but cannot figure out how to do it. I have an NI 6221 USB I/O device.  I want to program it to generate a digital output 100ms after receiving a digital input. I am trying to create a task to do this using NI Max, but all of the options on the trigger source menu are greyed out. There is no way to specify an external hardware trigger.  Do I have to program this functionality using DAQmx in the code?

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I found the solution to this question in Gen Dig Pulse-Dig Start.vi from the NI example finder. The answer is that you do need to configure the input trigger programmaticaly using the DAQmx functions. See example code for more details.

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