--- a/qiime2/qiime_longitudinal_linear-mixed-effects.xml	Sun Jul 21 02:21:34 2019 -0400
+++ b/qiime2/qiime_longitudinal_linear-mixed-effects.xml	Wed Jul 31 03:06:00 2019 -0400
@@ -47,7 +47,7 @@
  --p-lowess
 #end if
 
-#if $pci:
+#if str($pci):
  --p-ci=$pci
 #end if
 
@@ -93,7 +93,7 @@
 		<param label="--p-ci: NUMBER           Size of the confidence interval for the regression Range(0, 100)         estimate.                              [default: 95]" name="pci" optional="True" type="float" min="0" max="100" value="95"/>
 		<param label="--p-formula: TEXT        R-style formula to use for model specification. A formula must be used if the 'metric' parameter is None. Note that the metric and group columns specified in the formula will override metric and group columns that are passed separately as parameters to this method. Formulae will be in the format 'a ~ b + c', where 'a' is the metric (dependent variable) and 'b' and 'c' are independent covariates. Use '+' to add a variable; '+ a:b' to add an interaction between variables a and b; '*' to include a variable and all interactions; and '-' to subtract a particular term (e.g., an interaction term). See https://patsy.readthedocs.io/en/latest/formulas.html for full documentation of valid formula operators. Always enclose formulae in quotes to avoid unpleasant surprises.                     [optional]" name="pformula" optional="True" type="text"/>
 
-		<repeat name="input_files_mmetadatafile" optional="True" title="--m-metadata-file">
+		<repeat name="input_files_mmetadatafile" optional="True" title="--m-metadata-file  [required]">
 			<param label="--m-metadata-file: Metadata file or artifact viewable as metadata. This option may be supplied multiple times to merge metadata. [optional]" name="additional_input" type="data" format="tabular,qza,no_unzip.zip" />
 		</repeat>