select a pool based on source IP and then amend headers based on selected pool

Ok, all good now except one thing - the internal server is HTTP only on the server side, and the VS has SSL profiles both on the client side and on the server side. Now when I select the internal pool I get "Page not available" in the browser. I assume this is because LTM is trying to negotiate SSL to the port 80 of the server that allows only HTTP.

How do I correctly disable SSL profile and under what event? Currently I am trying as follows (does not seem to be working):

when CLIENT_ACCEPTED {
    if { [IP::addr [IP::client_addr] equals 192.168.1.0/24] } {
        pool "/Common/POOL_SERVICEDESK_EXT_HTTPS_443"
        log local0. "SERVICEDESK Client accepted, pool [LB::server pool]"
    }
    else {
        pool "/Common/POOL_SERVICEDESK_INT_HTTP_80"
        log local0. "SERVICEDESK Client accepted, pool [LB::server pool]"
         disable SSL here?
        SSL::disable serverside
    }
}

when HTTP_REQUEST {
 if { [LB::server pool] eq "/Common/POOL_FOR_EXTERNAL_SERVERS" }{
        
         Working with headers for External server
        
        log local0. "SERVICEDESK Request Received. Active app - External"
        HTTP::header replace host "server1.external.com" 
        if {[HTTP::uri] equals {/}} {HTTP::uri {/support/home}}
        } else {
        
         Working with headers for Supportworks
        
        log local0. "SERVICEDESK Request Received. Active app - Internal"
        HTTP::header replace host "server2.internal.com"
         or shall I disable it here?
        SSL::disable serverside
 }
}

when HTTP_RESPONSE {
     Rewrite the Location header for redirects
    if { [HTTP::header exists Location] }{ 
        HTTP::header replace Location [string map {"https://server1.external.com" "https://app.internal.com"} [HTTP::header Location]] 
        HTTP::header replace Location [string map {"http://server2.internal.com" "https://app.internal.com"} [HTTP::header Location]]
   }
}