can someone help me fix this:

Code:
<c:forEach items="${addSaleForm.items}" var="i" varStatus="itemsRow">											
							<td><form:input id="qty" path="items[${itemsRow.index}]" size="4" maxlength="4" value="${items[itemsRow.index]}"/></td>
							<td><form:errors path="items[${itemsRow.index}]" cssClass="error"/></td>	
					</c:forEach>
generates this error:
Code:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.beans.InvalidPropertyException: Invalid property 'items[0]' of bean class [CyberSous.Model.Sales]: Invalid array index in property path 'items[0]'; nested exception is java.lang.ArrayIndexOutOfBoundsException