Fix extra wip variable

hrt/shgraph/ShaderParam.hx

@@ -60,7 +60,6 @@ class ShaderParam extends ShaderNode {
 
 	private var parameterDisplay : String;
 	private var displayDiv : hide.Element;
-	public var parameterIndex : Int;
 	public function setName(s : String) {
 		parameterName = s;
 		if (eltName != null)

hrt/shgraph/nodes/SubGraph.hx

@@ -49,7 +49,7 @@ class SubGraph extends ShaderNode {
 							ids = paramInfo.ids;
 						ids.push(node.id);
 						if (!inputsInfo.exists(prefixSubGraph + paramId)) {
-							inputInfoKeys.insert(shaderParam.parameterIndex ,prefixSubGraph+paramId);
+							inputInfoKeys.push(prefixSubGraph+paramId);
 						}
 						inputsInfo.set(prefixSubGraph+paramId, { name : paramName , type: ShaderType.getSType(shaderParam.variable.type), hasProperty: false, isRequired : false, ids : ids });
 					case "ShaderInput":