How to set 'n/a' value for Plot in Data Box?

[handlar]

Hi,
I want to set manually the value n\a for transparent Plot in my Indicator. How can I do It?

Look at my screenshot, please http://joxi.ru/LmGv9egCeqQEgr

When I start my indicator, there are not Volume Profile at all on the chart and nearest long level and nearest short level are n\a

Then, If I add one Volume Profile on the chart - my Indicator find the price for POC level and write this price to Data Box, like this http://joxi.ru/p27Va9ZToyMPDm
But, If I remove this Volume Profile - I want set LongLevel to n/a, not for zero.

[NinjaTrader_JoshG]

Hello handlar,
Thanks for your post.

Does this occur when you add any other indicator to your chart or just Volume Profile?

Can you show us a sample of just a plot that does this or does it require complex logic to produce this behavior?