diff --git a/leenkx/Sources/iron/object/Animation.hx b/leenkx/Sources/iron/object/Animation.hx
index ecbc2f7..e86f500 100644
--- a/leenkx/Sources/iron/object/Animation.hx
+++ b/leenkx/Sources/iron/object/Animation.hx
@@ -411,12 +411,23 @@ class ActionSampler {
 	 */
 	public inline function setBoneAction(actionData: Array<TObj>) {
 		this.actionData = actionData;
-		this.totalFrames = actionData[0].anim.tracks[0].frames.length;
-		if(actionData[0].anim.root_motion_pos) this.rootMotionPos = true;
-		if(actionData[0].anim.root_motion_rot) this.rootMotionRot = true;
+		if (actionData != null && actionData.length > 0 && actionData[0] != null && actionData[0].anim != null) {
+			if (actionData[0].anim.tracks != null && actionData[0].anim.tracks.length > 0) {
+				this.totalFrames = actionData[0].anim.tracks[0].frames.length;
+			}
+			else {
+				this.totalFrames = 0;
+			}
+			if(actionData[0].anim.root_motion_pos) this.rootMotionPos = true;
+			if(actionData[0].anim.root_motion_rot) this.rootMotionRot = true;
+		}
+		else {
+			this.totalFrames = 0;
+		}
 		actionDataInit = true;
 	}
 
+
 	/**
 	 * Cache raw object data for object animation.
 	 * @param actionData Raw object data.