diff --git a/dlls/winevulkan/make_vulkan b/dlls/winevulkan/make_vulkan
index 493c9ad59ea..0ca2552240f 100755
--- a/dlls/winevulkan/make_vulkan
+++ b/dlls/winevulkan/make_vulkan
@@ -1097,6 +1097,10 @@ class VkVariable(object):
         if type_info:
             self.set_type_info(type_info)
 
+    def __eq__(self, other):
+        """ Compare member based on name against a string. """
+        return self.name == other
+
     def set_type_info(self, type_info):
         """ Helper function to set type information from the type registry.
         This is needed, because not all type data is available at time of
@@ -1106,6 +1110,31 @@ class VkVariable(object):
         self.handle = type_info["data"] if type_info["category"] == "handle" else None
         self.struct = type_info["data"] if type_info["category"] == "struct" else None
 
+    def get_dyn_array_len(self, prefix):
+        if isinstance(self.dyn_array_len, int):
+            return self.dyn_array_len
+
+        len_str = self.dyn_array_len
+        parent = self.parent
+        len = prefix
+
+        # check if lenght is a member of another struct (for example pAllocateInfo->commandBufferCount)
+        i = len_str.find("->")
+        if i != -1:
+            var = parent[parent.index(len_str[0:i])]
+            len_str = len_str[i+2:]
+            len += var.name + "->"
+            parent = var.struct.members
+
+        len += len_str
+        if not len_str in parent:
+            return len
+
+        var = parent[parent.index(len_str)]
+        if var.is_pointer():
+            len = "*" + len
+        return len
+
     def is_const(self):
         return self.const
 
@@ -1223,15 +1252,6 @@ class VkMember(VkVariable):
         self.values = values
         self.bit_width = bit_width
 
-    def __eq__(self, other):
-        """ Compare member based on name against a string.
-
-        This method is for convenience by VkStruct, which holds a number of members and needs quick checking
-        if certain members exist.
-        """
-
-        return self.name == other
-
     def __repr__(self):
         return "{0} {1} {2} {3} {4} {5} {6}".format(self.const, self.struct_fwd_decl, self.type, self.pointer,
                 self.name, self.array_len, self.dyn_array_len)
@@ -1313,7 +1333,7 @@ class VkMember(VkVariable):
         if self.needs_conversion(conv, unwrap, direction, False):
             if self.is_dynamic_array():
                 # Array length is either a variable name (string) or an int.
-                count = self.dyn_array_len if isinstance(self.dyn_array_len, int) else "{0}{1}".format(input, self.dyn_array_len)
+                count = self.get_dyn_array_len(input)
                 host_part = "host" if unwrap else "unwrapped_host"
                 if direction == Direction.OUTPUT:
                     return "convert_{2}_array_{6}_to_{5}({3}{1}, {0}{1}, {4});\n".format(output, self.name, self.type, input, count, win_type, host_part)
@@ -1557,7 +1577,8 @@ class VkParam(VkVariable):
             ctx_param = "&ctx, " if self.needs_alloc(conv, unwrap) else ""
             wrap_part = "" if unwrap or not self.needs_unwrapping() else "unwrapped_"
             if self.is_dynamic_array():
-                return "    {1}_host = convert_{2}_array_{4}_to_{6}host({5}{0}{1}, {0}{3});\n".format(prefix, self.name, self.type, self.dyn_array_len, win_type, ctx_param, wrap_part)
+                return "    {1}_host = convert_{2}_array_{4}_to_{6}host({5}{0}{1}, {3});\n".format(
+                    prefix, self.name, self.type, self.get_dyn_array_len(prefix), win_type, ctx_param, wrap_part)
             else:
                 return "    convert_{0}_{3}_to_{5}host({4}{1}{2}, &{2}_host);\n".format(self.type, prefix, self.name, win_type, ctx_param, wrap_part)
         else: