Variables won't save

[AgentGamerPro]

    if {Collection::%{_p}%} does not contain "Default":
        add "Default" to {Collection::%{_p}%}
        send "%{Collection::%{_p}%}%" to {_p}
        send "&a&lYou discovered a new pet! &2Check your collection!" to {_p}

(This is in a function event)
No matter what, RIGHT AFTER i add "Default" to the variable, it sends "<none>" to the player, meaning it wasn't added.

[rosathorn]

maybe try 

set {Collection::%{_p}%} to "Default"

As far as I know.. You don't do list variables this way. I was taught to do it like this: 
{Collection::%player%::*}

[AgentGamerPro]

48 minutes ago, rosathorn said:

maybe try 

set {Collection::%{_p}%} to "Default"

As far as I know.. You don't do list variables this way. I was taught to do it like this: 
{Collection::%player%::*}

ah thanks, im dumb