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In my template I have blocks that have alternative content. I want to dynamically delete some blocks and leave the otthers.

In the code below, I am removing block content that is not applicable to the type of document. When I omit the $docx->clearBlocks(); statement, the remaining block labels and content show in the generated document. When I include the statement, the remaining block labels and content are removed.

What am I doing wrong?

    $docx = new CreateDocxFromTemplate($FH['TEMPFILEPATH']);
    $docx->setTemplateSymbol('|');
 
    $arrayValues = array();
    foreach ($Substitutions as $documentVariable) {
        $arrayValues[$documentVariable] = $row[$documentVariable];
    }
     $docx->replaceVariableByText($arrayValues);

    foreach ($BlockRules as $k=>$v) {
        if (! eval("return($v);")) {
            $docx->deleteTemplateBlock($k);
            #echo "$k:delete\n";
        }
    }
    
    $docx->clearBlocks();