Merge pull request #425 from GabLeRoux/patch-1

Build parameters not groovy variables anymore

TUTORIAL.md

@@ -257,7 +257,18 @@ See  Help in the **Snippet Generator** for the `withEnv` step for more details o
 
 ## Build Parameters
 
-If you have configured your pipeline to accept parameters when it is built — **Build with Parameters** — they are accessible as Groovy variables of the same name.
+If you have configured your pipeline to accept parameters when it is built — **Build with Parameters** — they are accessible as Groovy variables inside `params`. They are also accessible as environment variables.
+
+**Example**: Using `isFoo` parameter defined as a boolean parameter (checkbox in the UI):
+
+```groovy
+node {
+  sh "isFoo is ${params.isFoo}"
+  sh 'isFoo is ' + params.isFoo
+  if (params.isFoo) {
+    // do something
+  }
+```
 
 # Recording Test Results and Artifacts