Added a test to avoid potential notices for missing objects
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@@ -368,7 +368,7 @@ function selectItemInCheckboxByName(formId, checkName, checked ) {
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echo '</td><td align="right"> ';
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$var = 'restore_user_info_'.$modname.'_instance_'.$instance->id;
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$$var = optional_param($var,1);
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if ($info->mods[$modname]->instances[$instance->id]->userinfo == 'true') {
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if (!empty($info->mods[$modname]->instances) && ($info->mods[$modname]->instances[$instance->id]->userinfo == 'true')) {
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print_checkbox($var,$$var,$$var,get_string('userdata'),'','this.form.elements[\'restore_user_info_'.$modname.'\'].checked=1;');
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} else {
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echo '<input type="hidden" name="'.$var.'" value="0" />';
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