Problem attaching treegrid inside Cell

hi,

hope somebody can help me i got a problem
i want to change my grid to treegrid but when i change it its show error an blank

code like here [code]
var cell_16 = layout_4.cells(‘b’);
cell_16.setText(‘Major Mask’);
var toolbar_10 = cell_16.attachToolbar();
toolbar_10.setIconsPath(’./codebase/imgs/’);

toolbar_10.loadStruct('<toolbar><item type="buttonInput" id="button_input_5" /><item type="separator" id="button_separator_11" /><item type="buttonInput" id="button_input_6" /><item type="separator" id="button_separator_14" /><item type="buttonInput" id="button_input_7" /><item type="separator" id="button_separator_15" /><item type="button" id="button_normal_13" text="Add" /><item type="separator" id="button_separator_12" /><item type="button" id="button_normal_14" text="Save" /><item type="separator" id="button_separator_13" /><item type="button" id="button_normal_15" text="Delete" /></toolbar>', function() {});
var grid_13 = cell_16.attachTreeGrid();
grid_13.setIconsPath('./codebase/imgs/');

grid_13.setHeader("Tree,Plain Text,Long Text,Color,Checkbox");
grid_13.setColTypes("tree,ed,txt,ch,ch");

grid_13.setColSorting('str,str,str,str');
grid_13.setInitWidths('*,*,*,*');
grid_13.init();
grid_13.load('./data/test_list_1.xml', 'xml');[/code]

and its show blank

the test_list_1.xml i i use from sample, like this

[code]<?xml version="1.0" encoding="UTF-8"?>


userdata value 1


userdata value 2



userdata value for honda

Honda


BMW


userdata value for bmw1 1


userdata value for bmw1 2

325i
30,800
2.5L
184
19
27


M3 Coupe
47,100
3.2L
333
16
24

<row id="vw">
	<cell image="folder.gif">Volkswagen</cell>
    	<row id="vw1">
    		<cell>Colf GL 2.0</cell>
    		<cell>15,580</cell>
    		<cell>2.0L</cell>
    		<cell>115</cell>
    		<cell>24</cell>
    		<cell>30</cell>
    	</row>
</row>
<row id="mazda">
	<cell image="folder.gif">Mazda</cell>
    	<row id="mazda1">
    		<cell>MX-5 Miata</cell>
    		<cell>21,868</cell>
    		<cell>1.8L</cell>
    		<cell>142</cell>
    		<cell>22</cell>
    		<cell>28</cell>
    	</row>
</row>
<row id="porsche">
	<cell image="folder.gif">Porsche</cell>
    	<row id="porsche1">
    		<cell>Porsche 911</cell>
    		<cell>128,200</cell>
    		<cell>3.6L</cell>
    		<cell>415</cell>
    		<cell>14</cell>
    		<cell>22</cell>
    		<cell>4.06</cell>
    		<cell>12.31</cell>
    		<cell>120.63</cell>
    		<cell>119</cell>
    	</row>
</row>
[/code]
 var grid_13 = cell_16.attachTreeGrid();

There is no special attachTreeGrid function for attaching the treegrid. You need to use the attachGrid method.