Update variable from script

🟢 Beginner

variable script

This example shows how to update a variable directly from a detached script that runs at a fixed interval.

Declare a detached script with detached.scripts to run a JS script every second using a cron expression.
Create an integer variable with owner.variables to store the result.
Write a JavaScript function that generates a random number and writes it directly to the variable.

git checkout origin/osp-scripts-configuration .
git checkout origin/osp-variables-configuration .
git checkout origin/example-variables-update-from-script .

Steps

1. Create a detached script that will be executed every second

root/examples/variables/update-variable-from-script/script/detached.scripts

{
    "moduleId": "modules.scripts.scripts-1",
    "scheduledExecutions": ["* * * ? * * *"],
    "accessedValues": [],
    "sourceFile": "root/variables/update-variable-from-script/script/script.js"
}

2. Create an integer variable

root/examples/variables/update-variable-from-script/variable/value.ospp

{
    "name": "Integer variable",
    "description": "Variable updated from a script",
    "type": "INTEGER"
}

root/examples/variables/update-variable-from-script/variable/owner.variables

{
  "moduleId": "modules.variables.variables-1"
}

3. Write a script that generates a random number and updates the variable

root/examples/variables/update-variable-from-script/script/script.js

main();

function main() {
    let number = Math.floor(Math.random() * 100);
    values.update("root.variables.update-variable-from-script.variable", number);
}

4. Visualize the value change

The example Visualize current state of values shows how to display a value.