diff --git a/pkg/generator/helper/docuHelper.go b/pkg/generator/helper/docuHelper.go
index 29a0b138c..6aa3f8a52 100644
--- a/pkg/generator/helper/docuHelper.go
+++ b/pkg/generator/helper/docuHelper.go
@@ -69,6 +69,7 @@ func setDefaultStepParameters(stepData *config.StepData) {
 			switch param.Type {
 			case "bool":
 				param.Default = "`false`"
+				param.PossibleValues = append(param.PossibleValues, true, false)
 			case "int":
 				param.Default = "`0`"
 			}
@@ -80,6 +81,7 @@ func setDefaultStepParameters(stepData *config.StepData) {
 				param.Default = fmt.Sprintf("`%v`", param.Default)
 			case "bool":
 				param.Default = fmt.Sprintf("`%v`", param.Default)
+				param.PossibleValues = append(param.PossibleValues, true, false)
 			case "int":
 				param.Default = fmt.Sprintf("`%v`", param.Default)
 			}
diff --git a/pkg/generator/helper/docuHelper_test.go b/pkg/generator/helper/docuHelper_test.go
index 767f687ff..edd5540f8 100644
--- a/pkg/generator/helper/docuHelper_test.go
+++ b/pkg/generator/helper/docuHelper_test.go
@@ -20,7 +20,7 @@ var expectedResultDocument string = "# testStep\n\n\t## Description\n\nLong Test
 	"| `param1` | No |  |  |\n" +
 	"| `param2` | Yes |  |  |\n" +
 	"| `script` | Yes |  |  |\n" +
-	"| `verbose` | No | `false` |  |\n\n" +
+	"| `verbose` | No | `false` | `true`, `false` |\n\n" +
 	" * `param0`: param0 description\n" +
 	" * `param1`: param1 description\n" +
 	" * `param2`: param1 description\n" +