views related content block // show content with specific initial letter i have a content-type with this fields:

title field
starting letter // term reference -&gt; stores term in vocab "starting letter"
car brand // term reference -&gt; stores term in vocab "car brand"
car model // term reference -&gt; stores term in vocab "car model"
Image field


i have created a view that hast the url: example.com/vehicles/audi (the term audi comes from the vocab "car brand" in views this looks like vehicles/%)

on this page with the url example.com/vehicles/audi i want to show a block that contains a list of other cars which name starts with the letter A like:

Acura
Alfa Romeo
AMC
Ascari


the same should be work with brand starting with B, C and so on. i need a contextual solution.

my problem and what i dont unterstand:
how do i set this thing up, because i dont have the term "A" in my url which i could filter with the contextual filter. i just have the term "audi". can anyone help me please?
Set argument for second view using hook_views_pre_view().

$view-&gt;set_arguments(array('A'));