<form action="<?php echo $this->getUrl("invoices/download/index/")?>" method="post" style="text-align: center;">
<?php echo $block->getBlockHtml("formkey"); ?>
    <Label>Region: </Label>
    <select name="region">
        <?php
        foreach ($block->getRegionData() as $region) {
        ?>
            <option value="<?php echo $region->getRegion(); ?>"><?php echo $region->getRegion(); ?></option>
        <?php
        }
        ?>
    </select>

    <Label>Invoice Year: </Label>
    <select name="year">
        <?php
        for($i = date("Y"); $i >= date("Y") - 10; $i--) {
        ?>
            <option value="<?php echo $i; ?>"<?php if($i==date("Y")) {?> selected="selected" <?php } ?> > 
                <?php echo $i; ?> 
            </option> 
        <?php
        }
        ?>
    </select>

    <Label>Invoice month: </Label>
    <select name="month">
        <?php
        for($i = 1; $i <= 12; $i++) {
        ?>
            <option value="<?php echo $i; ?>"<?php if($i==date("m")-1) {?> selected="selected" <?php } ?> > 
                <?php echo $i; ?> 
            </option>
        <?php
        }
        ?>
    </select>

    <input type="submit" value="Download">
</form>

<form action="
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