DSL Rules: example run a rule

Author: dilyanpalauzov

configuration/rules-dsl.md

@@ -955,6 +955,18 @@ then
 end
 ```
 
+### Run A Rule
+
+A rule with UID `r2` can be executed with [RuleManager.runNow()](https://openhab.org/javadoc/latest/org/openhab/core/automation/rulemanager#runNow(java.lang.String)):
+
+```java
+val ruleManagerBundleContext = org.osgi.framework.FrameworkUtil.getBundle(org.openhab.core.automation.RuleManager).bundleContext
+val ruleManagerServiceReference = ruleManagerBundleContext.getServiceReference(org.openhab.core.automation.RuleManager)
+val ruleManager = ruleManagerBundleContext.getService(ruleManagerServiceReference)
+ruleManager.runNow("r2")
+ruleManagerBundleContext.ungetService(ruleManagerServiceReference)
+```
+
 ## Further Examples
 
 Many more examples can be found in the [Tutorials & Examples](https://community.openhab.org/c/tutorials-examples) category of the community forum.