Observe field is the most important part of brightscript language ;-

We can use observe field in several places like-

1 ) In any Interface field we can use observe field like when data come then callback function will run.

2 ) In any button when we click on that button then callback function will run .

3 ) In every xml element group, button and all we can use observe field.

In Roku development, the observeField function is used to monitor changes in the value of…

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