Alright so this is how it went....
1.day:-Milo loved it-he was running his head off with full speed for about 3-5 minutes,I praised him verbally,and he was very happy after too.
-Maya didn't like it so much and was nervous on it,after 1 minute I took her off because she wasn't happy at all.
2.day: -Milo didn't like it anymore,kept turning backwards and running like that/tried to get off/,I used praise-food,he just wanted off...
-Maya liked it, was running like a pro for about 5 minutes,then I stopped her.Was very happy.
3.day:-Milo, I didn't let him turn back used more food and praise,right now he is running until he reaches the food then stop.SO we played this game for about 10 minutes,but he didn't turned back at least.Was happy though,not nervous like on day 2.
-Maya again like a pro,was running for about 6 minutes,then I stopped her.
So this is where we're right now,Milo being an anoying azzhole,but I'm being patient with him,just don't get it why he liked it soo much on day 1/when I didn't even had to use food?/.