Can I implement the functionality of a Schmitt trigger in LabVIEW?

I am reading in a waveform file using the Read Waveform From File.vi. I would like some guidance as to how to implement a Schmitt trigger using LabVIEW blocks to massage the incoming waveform into a new waveform that resembles a digital data stream.
For example:
When the amplitude of the incoming waveform goes over 0.7, the output is 1 and is latched until the amplitude falls below -0.7.
Once the amplitude of the incoming waveform falls below -0.7, the output is 0 and is latched until the amplitude exceeds 0.7.

Thanks again for the quick response.
I am having trouble with the autoindexing: I keep getting data values of 0.
I have attached a VI that I quickly threw together to show what I am doing.
Please tell me if my method/reasoning is incorrect.
Attachments:
test1.vi ‏25 KB

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