Question Problem with my DHCP-dns configuration

[Drakestes]

Hello, I have set a DHCP in a network in Packet Tracer, my DHCP is set in a ASA firewall.
I have specified the DNS server on my config, but the dns setting is not paste in my client machines when I configure them with dhcp ip.
Here is my configuration:
Firewall(config)#show running-config dhcp
dhcpd dns 10.0.1.50
!
dhcpd address 10.0.3.100-10.0.3.131 Lab1
dhcpd enable Lab1
!
dhcpd address 10.0.4.100-10.0.4.131 Lab2
dhcpd enable Lab2
!
dhcpd address 10.0.5.100-10.0.5.131 Lab3
dhcpd enable Lab3
!
dhcpd address 10.0.6.100-10.0.6.131 Lab4
dhcpd enable Lab4

When I search online my configuration seems correct.
My network is like in the picture.
Any Idea what I have done wrong?
Thanks!

 

[Drakestes]

I have set my dns server on each interface instead of a general DHCP rule and it wolved my problem.