In RapidMiner Read CSV operator not assigning attribute name - rapidminer

Question

I'm using RapidMiner Studio 5.3 with 'Read CSV' operator with 'first row as names' parameter checked. After that I can't use 'Rename' or 'Set Role' operators because "attribute name is undefined". It's like It reads fine but It doesn't send the attribute names forward.
Here's the Meta Data View of what happens with a breakpoint after the 'Read CSV' operator, where you can see that he recognizes attributes names.
Now the 'Set Role' operator can't find attribute names.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="read_csv" compatibility="5.3.015" expanded="true" height="60" name="Read CSV" width="90" x="179" y="75">
<parameter key="csv_file" value="C:\Users\lffreitas\Documents\tae.csv"/>
<list key="annotations"/>
<list key="data_set_meta_data_information"/>
</operator>
<operator activated="true" class="set_role" compatibility="5.3.015" expanded="true" height="76" name="Set Role" width="90" x="380" y="75">
<list key="set_additional_roles"/>
</operator>
<connect from_op="Read CSV" from_port="output" to_op="Set Role" to_port="example set input"/>
<connect from_op="Set Role" from_port="example set output" to_port="result 1"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="sink_result 1" spacing="0"/>
<portSpacing port="sink_result 2" spacing="0"/>
</process>
</operator>
</process>
Any clue of what can be happening here?

Answer 1

Do the following:
In the process pane, look at the paper clip icon on top right (number 5) and click on it...That will do the trick. Cheers; Alex

Answer 2

The Set Role operator doesn't have an attribute selected so it fails. Fix this by choosing the attribute name from the drop down within the parameters for this operator.

Answer 3

In the process pane, look at the paper clip icon on top right (number 5) and click on it...That will do the trick. Cheers; Alex
This answer help me solve the problem. But there is still a problem,which is the "read URL" operator can't pass the attribute name to the next operator "rename operator". So there are some messages in the log. The picture shows what happens
.