Tami, see these posts. Visualforce interprets URL Parameters as POST data so all you need to do is send the right URL Parameters. If you are trying to pass in a list of Ids then you need to add a separate “ids” parameter for each Id, e.g. “/apex/codacashentrybulkposting?ids=0010000000111&ids=00100000000222” …

https://community.skuid.com/t/how-to-add-marketo-send-email-mass-action-to-a-skuid-tab…
https://community.skuid.com/t/mass-action-inline-javascript-on-related-list-for-drawlo… 

Hi Zach,

Thanks for the quick reply. I followed your instructions and I have a new error. 

“java.lang.IllegalArgumentException: id a1qU0000000KHk3IAGretURL=/a1q?fcf=00BU0000003AnRA&rolodexIndex=-1&page=1 must be 15 characters “

Here is what my in-line snippet looks like:

// Get the Ids of the selected items as an Array
var idsArray = skuid.$.map(argumentsu0].list.getSelectedItems(),function(item){ 

   return item.row.Id; 

});

// Convert this array to a comma-separated String

var idsString = idsArray.join(‘,’);


// POST to FF

window.top.location = “https://ffbext.cs10.visual.force.com/apex/codabecashentrybulkposting?ids=”+ idsString +”
?retURL=%2Fa1q%3Ffcf%3D00BU0000003AnRA%26rolodexIndex%3D-1%26page%3D1&wrapMassAction=1&scontrolCaching=1”;

I have this working now. The join for the ids couldn’t be ‘,’. I think that is what you were telling me in your original post but I wasn’t quite understanding. I would either get the 15 character error or only the first record would be posted. When I changed ‘,’ to ‘&ids=’ I was able to post all selected records.
Below is the final code. 

// Get the Ids of the selected items as an Array
var idsArray = skuid.$.map(argumentsd0].list.getSelectedItems(),function(item){ 

   return item.row.Id; 

});

// Convert this array to a comma-separated String

var idsString = idsArray.join(‘&ids=’);


// POST to FF

window.top.location =“https://ffbext.cs10.visual.force.com/apex/codabecashentrybulkposting?ids=”+ idsString +“&retURL=%2Fa1q%3Ffcf%3D00BU0000003AnRA%26rolodexIndex%3D-1%26page%3D1&wrapMassAction=1&scontrolCaching=1”;