diff --git a/src/main/scala/org/znsio/perfiz/GatlingWorkLoadModelStep.scala b/src/main/scala/org/znsio/perfiz/GatlingWorkLoadModelStep.scala
index 6ba73a2..ef1ce6c 100644
--- a/src/main/scala/org/znsio/perfiz/GatlingWorkLoadModelStep.scala
+++ b/src/main/scala/org/znsio/perfiz/GatlingWorkLoadModelStep.scala
@@ -17,7 +17,7 @@ class GatlingWorkLoadModelStep {
   var randomised: Boolean = _
 
   @BeanProperty
-  var targetUserCount: Int = _
+  var targetUserCount: Double = _
 
   def durationAsFiniteDuration = Duration(duration).asInstanceOf[FiniteDuration]
 }
diff --git a/src/test/scala/org/znsio/perfiz/PerfizSimulation.scala b/src/test/scala/org/znsio/perfiz/PerfizSimulation.scala
index 850376e..1b65f99 100644
--- a/src/test/scala/org/znsio/perfiz/PerfizSimulation.scala
+++ b/src/test/scala/org/znsio/perfiz/PerfizSimulation.scala
@@ -43,7 +43,7 @@ class PerfizSimulation extends Simulation {
         case ConstantConcurrentUsers => constantConcurrentUsers(loadPattern.getUserCount()) during
           loadPattern.durationAsFiniteDuration
         case RampConcurrentUsers => rampConcurrentUsers(loadPattern.getUserCount()) to
-          loadPattern.getTargetUserCount() during
+          loadPattern.getTargetUserCount().toInt during
           loadPattern.durationAsFiniteDuration
       }
     })