diff --git a/lib/galaxy/managers/markdown_parse.py b/lib/galaxy/managers/markdown_parse.py
index 9420cef2e7f..19e7559d604 100644
--- a/lib/galaxy/managers/markdown_parse.py
+++ b/lib/galaxy/managers/markdown_parse.py
@@ -13,6 +13,7 @@ GALAXY_FLAVORED_MARKDOWN_CONTAINER_LINE_PATTERN = re.compile(
     r"```\s*galaxy\s*"
 )
 VALID_CONTAINER_END_PATTERN = re.compile(r"^```\s*$")
+DYNAMIC_ARGUMENTS = object()
 VALID_ARGUMENTS = {
     "history_dataset_display": ["input", "output", "history_dataset_id"],
     "history_dataset_embedded": ["input", "output", "history_dataset_id"],
@@ -32,7 +33,7 @@ VALID_ARGUMENTS = {
     "generate_galaxy_version": [],
     "generate_time": [],
     "invocation_time": ["invocation_id"],
-    "visualization": ["id", "history_dataset_id"],
+    "visualization": DYNAMIC_ARGUMENTS,
     # Invocation Flavored Markdown
     "invocation_outputs": [],
     "invocation_inputs": [],
@@ -40,8 +41,8 @@ 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_\-\|]+|\"[^\"]+\"|\'[^\']+\''''
-FUNCTION_ARG = r'\s*\w+\s*=\s*(?:%s)\s*' % ARG_VAL_REGEX
+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})*)'
 FUNCTION_MULTIPLE_ARGS_PATTERN = re.compile(FUNCTION_MULTIPLE_ARGS)
@@ -86,14 +87,15 @@ 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:
                     invalid_line("Only one Galaxy directive is allowed per fenced Galaxy block (```galaxy)")
                 container = func_call_match.group("container")
                 valid_args = VALID_ARGUMENTS[container]
+                if valid_args is DYNAMIC_ARGUMENTS:
+                    continue
+
                 first_arg_call = func_call_match.group("firstargcall")
 
                 def _validate_arg(arg_str):
diff --git a/test/unit/test_markdown_validate.py b/test/unit/test_markdown_validate.py
index 2b7a6f2acf3..4cce819f547 100644
--- a/test/unit/test_markdown_validate.py
+++ b/test/unit/test_markdown_validate.py
@@ -212,3 +212,14 @@ history_dataset_link(  output = moo, pathx ="cow.png", label= "my label" )
 history_dataset_link(  output = moo, path ="cow.png", labelx= "my label" )
 ```
 """, at_line=2)
+
+    assert_markdown_valid("""
+```galaxy
+visualization(id=1)
+```
+""")
+    assert_markdown_valid("""
+```galaxy
+visualization(foo|bar=hello)
+```
+""")