Problem with cast

[jmajyo]

Hi, I have the following code:

                        void *l;

l=&par.ambient;

if(conectada)

{

message.payload=l;

MQTTPublish(&c,"light",&message);

}

par.ambient is declared as float.

message.payload must be a void *

my problem is that MQTTPublish, publish the direcction of the array and not its value. I need the value. Someone can help me? 

Thanks

P.S: sorry about my english.

[jmajyo]

I forgot, this code is "C" and the library I am using is MQTTClient.h