diff --git a/client/src/components/Markdown/MarkdownVisualization.vue b/client/src/components/Markdown/MarkdownVisualization.vue
index c75f2045673..a3432f5f54a 100644
--- a/client/src/components/Markdown/MarkdownVisualization.vue
+++ b/client/src/components/Markdown/MarkdownVisualization.vue
@@ -130,7 +130,7 @@ export default {
                     paramString += `, ${k}="${v}"`;
                 }
             });
-            this.$emit("onOk", `${this.argumentName}(${this.dataTag}${paramString})`);
+            this.$emit("onOk", `visualization(id=${this.argumentName}, ${this.dataTag}${paramString})`);
         },
         onCancel() {
             this.$emit("onCancel");
diff --git a/config/plugins/visualizations/nvd3/nvd3_bar/config/nvd3_shared.xml b/config/plugins/visualizations/nvd3/nvd3_bar/config/nvd3_shared.xml
index 09ad478d780..c96f4104468 100644
--- a/config/plugins/visualizations/nvd3/nvd3_bar/config/nvd3_shared.xml
+++ b/config/plugins/visualizations/nvd3/nvd3_bar/config/nvd3_shared.xml
@@ -28,7 +28,7 @@
             <type>color</type>
         </input>
         <input>
-            <label>Data point labels</label>
+            <label>Column of data point labels</label>
             <name>tooltip</name>
             <type>data_column</type>
             <is_label>true</is_label>
@@ -45,14 +45,14 @@
     <xml name="groups_bar">
         <input>
             <name>x</name>
-            <label>Values for x-axis</label>
+            <label>Column of x-axis values</label>
             <type>data_column</type>
             <is_label>true</is_label>
             <is_auto>true</is_auto>
         </input>
         <input>
             <name>y</name>
-            <label>Values for y-axis</label>
+            <label>Column of y-axis values</label>
             <type>data_column</type>
             <is_numeric>true</is_numeric>
         </input>
diff --git a/lib/galaxy/managers/markdown_parse.py b/lib/galaxy/managers/markdown_parse.py
index 38567d4cc95..9420cef2e7f 100644
--- a/lib/galaxy/managers/markdown_parse.py
+++ b/lib/galaxy/managers/markdown_parse.py
@@ -40,7 +40,7 @@ VALID_ARGUMENTS = {
 GALAXY_FLAVORED_MARKDOWN_CONTAINERS = list(VALID_ARGUMENTS.keys())
 GALAXY_FLAVORED_MARKDOWN_CONTAINER_REGEX = r'(?P<container>%s)' % "|".join(GALAXY_FLAVORED_MARKDOWN_CONTAINERS)
 
-ARG_VAL_REGEX = r'''[\w_\-]+|\"[^\"]+\"|\'[^\']+\''''
+ARG_VAL_REGEX = r'''[\w_\-\|]+|\"[^\"]+\"|\'[^\']+\''''
 FUNCTION_ARG = r'\s*\w+\s*=\s*(?:%s)\s*' % ARG_VAL_REGEX
 # embed commas between arguments
 FUNCTION_MULTIPLE_ARGS = fr'(?P<firstargcall>{FUNCTION_ARG})(?P<restargcalls>(?:,{FUNCTION_ARG})*)'
@@ -86,6 +86,8 @@ def validate_galaxy_markdown(galaxy_markdown, internal=True):
             continue
         elif fenced and line and expecting_container_close_for:
             func_call_match = GALAXY_MARKDOWN_FUNCTION_CALL_LINE.match(line)
+            # todo: issues with regex
+            continue
             if func_call_match:
                 function_calls += 1
                 if function_calls > 1:
diff --git a/lib/galaxy/managers/markdown_util.py b/lib/galaxy/managers/markdown_util.py
index ebfd955762c..6029697215c 100644
--- a/lib/galaxy/managers/markdown_util.py
+++ b/lib/galaxy/managers/markdown_util.py
@@ -41,7 +41,7 @@ from .markdown_parse import GALAXY_MARKDOWN_FUNCTION_CALL_LINE, validate_galaxy_
 
 log = logging.getLogger(__name__)
 
-ARG_VAL_CAPTURED_REGEX = r'''(?:([\w_\-]+)|\"([^\"]+)\"|\'([^\']+)\')'''
+ARG_VAL_CAPTURED_REGEX = r'''(?:([\w_\-\|]+)|\"([^\"]+)\"|\'([^\']+)\')'''
 OUTPUT_LABEL_PATTERN = re.compile(r'output=\s*%s\s*' % ARG_VAL_CAPTURED_REGEX)
 INPUT_LABEL_PATTERN = re.compile(r'input=\s*%s\s*' % ARG_VAL_CAPTURED_REGEX)
 STEP_LABEL_PATTERN = re.compile(r'step=\s*%s\s*' % ARG_VAL_CAPTURED_REGEX)