Is it possible to use RPC for values in a filter?

[giladba]

I’m implementing a custom app, and I wonder if it’s possible to use RPC in order to select values in a filter.
I already implemented an RPC that fetches a list of possible values from my API server.
I’m using it in a select parameter, like you can see in the “Groups” in one of the screenshots.
However, I want to use the same functionality in a filter, and let the user select the groups in the fields pointed by the red arrow (the other screenshot).

The module’s Mappable Parameters:

[
	{
		"name": "textFilter",
		"label": "Text Filter",
		"type": "filter",
		"grouped": false,
		"options": {
			"logic": "and",
			"store": [
				{
					"label": "Email",
					"value": "email"
				},
				{
					"label": "Nickname",
					"value": "nickname"
				},
				{
					"label": "First Name",
					"value": "firstName"
				},
				{
					"label": "Last Name",
					"value": "lastName"
				},
				{
					"label": "Address",
					"value": "address"
				}
			],
			"operators": [
				{
					"label": "Text",
					"options": [
						{
							"label": "Contains",
							"value": "contains"
						},
						{
							"label": "Equals",
							"value": "equals"
						},
						{
							"label": "Starts With",
							"value": "startsWith"
						},
						{
							"label": "Ends With",
							"value": "endsWith"
						},
						{
							"label": "Equals",
							"value": "equals"
						}
					]
				}
			]
		}
	},
	{
		"name": "datetimeFilter",
		"label": "Datetime Filter",
		"type": "filter",
		"grouped": false,
		"options": {
			"logic": "and",
			"store": [
				{
					"label": "Created At",
					"value": "createdAt"
				},
				{
					"label": "Updated At",
					"value": "updatedAt"
				}
			],
			"operators": [
				{
					"label": "Datetime",
					"options": [
						{
							"label": "Before",
							"value": "lt"
						},
						{
							"label": "On or before",
							"value": "lte"
						},
						{
							"label": "After",
							"value": "gt"
						},
						{
							"label": "On or after",
							"value": "gte"
						}
					]
				}
			]
		}
	},
	{
		"name": "tags",
		"type": "select",
		"label": "Tags",
		"options": "rpc://rpcTags",
		"multiple": true
	},
	{
		"name": "groups",
		"type": "select",
		"label": "Groups",
		"options": "rpc://rpcGroups",
		"multiple": true
	},
	{
		"name": "limit",
		"type": "uinteger",
		"label": "Limit",
		"default": 10,
		"help": "Maximum number of returned contacts."
	},
	{
		"name": "pageSize",
		"type": "uinteger",
		"validate": {
			"max": 250
		},
		"label": "Page Size",
		"default": 100,
		"mappable": false,
		"help": "Paging parameter. Number of contacts to return in one page.",
		"advanced": true
	}
]