Decaying Instance Variables

I am almost ready to dive into "webstorage" which intimidates me a bit. Before I do I want to ask about creating a state of decay for my Tree which has 5 instance variables with different values.

My tree has 3 animation states and over a browser session (lets say 10 minutes) I want my tree to decay instance variables at random in increments (some -3 some -1)

My tree is set to 55 total instance variables when it falls below 34 it takes its second animation.

How would I go about setting up this sequence of events?

Obviously in the future I want to make my decay state longer and associated with the Player and webstorage so when Player returns to a session the tree is in its previous state.

Thanks in advance.

One footnote I have to say this is the most badass peice of software and community that I have ever seen. I am extremely impressed!

Web storage is simple. You're just storing pairs of keys and value. The keys are strings, the values are strings or numbers.

For example, to store the player score:

WebStorage: Set local key "score" to 500

Then when you want to get that value from web storage you do:

Set variable to WebStorage.LocalValue("score")

You can easily save an entire array or dictionary to webstorage by saving it as JSON.

WebStorage: Set local key "savedArray" to Array.AsJSON

Array: Load from JSON string WebStorage.LocalValue("savedArray")

For your tree I suppose you could do something like

System: Every x seconds

System: Compare two values floor(random(100)) < n

   -> Tree: Subtract floor(random(a, b)) from var

(Every x seconds there is a n% chance to subtract a value from a to b-1)

magical... and great detail on the webstorage. I appreciate it.