Passing data to tokens plugin

Hi,

I've got a plugin.js file inside a folder in order to display a custom dropdown. Everything works fine but I would like to customise the content of the custom dropdown on the fly without having to have different files.

This is how I add the extraPlugins:

CKEDITOR.replace('emailTemplates_emailTemplateBodyCKEditor', {
            uiColor: '#c0c0c0',
            fullPage: true,
            toolbar: [
                { name: 'document', groups: ['mode', 'document', 'doctools'], items: ['Source', '-', 'Save', 'NewPage', 'Preview', 'Print', '-', 'Templates'] },
                { name: 'clipboard', groups: ['clipboard', 'undo'], items: ['Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo'] },
                { name: 'editing', groups: ['find', 'selection', 'spellchecker'], items: ['Find', 'Replace', '-', 'SelectAll', '-', 'Scayt'] },
                { name: 'forms', items: ['Form', 'Checkbox', 'Radio', 'TextField', 'Textarea', 'Select', 'Button', 'ImageButton', 'HiddenField'] },
                '/',
                { name: 'basicstyles', groups: ['basicstyles', 'cleanup'], items: ['Bold', 'Italic', 'Underline', 'Strike', 'Subscript', 'Superscript', '-', 'RemoveFormat'] },
                { name: 'paragraph', groups: ['list', 'indent', 'blocks', 'align', 'bidi'], items: ['NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote', 'CreateDiv', '-', 'JustifyLeft', 'JustifyCenter', 'JustifyRight', 'JustifyBlock', '-', 'BidiLtr', 'BidiRtl'] },
                { name: 'links', items: ['Link', 'Unlink', 'Anchor'] },
                { name: 'insert', items: ['Image', 'Flash', 'Table', 'HorizontalRule', 'Smiley', 'SpecialChar', 'PageBreak', 'Iframe'] },
                '/',
                { name: 'styles', items: ['Styles', 'Format', 'Font', 'FontSize'] },
                { name: 'colors', items: ['TextColor', 'BGColor'] },
                { name: 'tools', items: ['Maximize', 'ShowBlocks'] },
                { name: 'others', items: ['-'] },
                { name: 'about', items: ['About'] },
                { name: 'srkiTokens', items: ['tokens'] }

            ],
            extraPlugins: 'tokens'
        });

Is there a way I can pass data that I can thenuse inside the plugin.js file?

Thanks