how to check the length of products in product bundle?

Hello All, 

I am trying to show all the products in bundles as a table in doc template 
im doing the folllowing:

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{#product_bundles}
{if name.length > 0 }{name}
{position}
Kommentare:
{#product_bundle_notes}
• {description}{/product_bundle_notes}
Pos Artikelnr. Bezeichnung Rabatt Menge Einzelpreis je ME GP (Brutto) GP rabattiert
{#products sort='position:asc'}{@index} {product_template_name.abbildung_c scale='0.05'} {product_template_name.name} {product_template_name.kurztext_de_c} {discount_amount} {quantity} {product_template_name.list_price} {subtotal} {total_amount}{/products}
{/product_bundles}
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX


I have two groups or bundles but for some reason, a third empty bundle is shown even tho i dont have it.

like this:


my two groups show fine but at the end i get a third empty one.

i have tried to get the length and showing something only if  a bundle has more than 0 products but i couldnt find out how to find such a thing.

also i want the word comment shown only if there are comments but i also couldnt find out the length property to do such a conditional.

help is appreciated
thank you in advance