Get directions form inside Map balloon

Sorry about this, but I have read all the posts about this and I can’t get it working.

This is the closer I tried to I want to do (posted by Marcus in another post):

<form action="<a href="https://maps.google.com/maps&quot" rel="nofollow">https://maps.google.com/maps&quot</a>; method="get" target="_blank"><br />
<strong>To get directions enter your starting address:</strong><br />
<input type="text" name="saddr" /><br />
<input type="hidden" name="daddr" value="#_ADDRESS, #_TOWN" /><br />
<input type="submit" value="get directions" /><br />
</form>

But with that code I get this

Thanks for your support!

https://www.ads-software.com/plugins/events-manager/