We have 2 CAS should be configured with HA are located in the WAN Zone of the FWSM. there is a static NAT means
static (inside,WAN) 10.0.0.1 10.0.0.1 netmask 255.255.255.255
where 10.0.0.1 is the ip of CAM and the cas has 184.108.40.206.
I have read that if the CAS and CAM sare across the firewall then CAM will not add CAS as HA unit. The above natting is above.
If there's NAT in the picture, then yes, this won't work. If you can somehow remove the NAT and route between the CAS and CAM, then it should be fine.
[Edit] I just looked at the NAT closely and apologize for giving you the wrong information. The only scenario when NAT breaks things is when the IP addresses are different when you're NAT'ing (e.g. 10.x being nat'ed to 192.168.x when reaching the CAM etc)
In this scenario where the NAT and the actual IP are the same it should work. You'll just have to ensure that the required traffic flow is open between the devices.
That is correct. HA with NAT'd CASs isn't supported.