WP_Query and calling for multiple pages

Hi,

I am using this code in the WP_query section of the widget:

{
    "post_type": "page",
    "orderby": "rand",
    "page_id": "234,37,61"
}

I am imagining that either “page_id” does not support multiple ids or I’m doing something more wrong than that.

Trying to have the widget feature a random page on each load from a list of available pages.

Any way of doing that?

the ip to the site (still building): http://23.21.211.27/

http://ww.wp.xz.cn/plugins/recent-posts-plus/