Wordpress - Disable google maps scrollwheel zoom

On the front page of my site, I have a full-width google map that is part of the 'Events Manager' plugin. This map get the mouse pointer stuck in it when you scroll down the page, and it starts zooming the map instead. I want the 'scrollwheel' property disabled for this map, so when you scroll over the map it does not suddenly start zooming the map. I was looking in the [login to view URL] file and tried adding scrollwheel: false but this didn't work. Other plugins I have also have google maps components, geo my wp, and also wp adverts with the 'mal' add on so users can see a map that of where the item is for sale. Perhaps the change needs to be made in one of those files, because I recently noticed, on mobile, the events manager map on my homepage started to say 'use two fingers to move the map' when you scroll over it with your finger. This is really good! But I didnt update events manager it is customised it for me. So I don't know what changed or where this new setting is being picked up from, but I guess this is where you need to make your change. It must be one of the other plug ins? I guess when I updated one of them it had this mobile setting added, hence me suddenly seeing this on the events manager maps. Hopefully it is just adding the line/property to the correct file. There is guidance here on how the events manager map works: [login to view URL] But I am happy for a 'work around' to be used if easier, such as: [login to view URL] [login to view URL] [login to view URL] The Events Manager plugin must not be updated to a newer version of the plugin as part of this work, as my version is customised.