tHMap how to exclude blank values for if then statement

[Edith1]

Is there a way to exclude blanks or nulls after using an if then statement in Data Mapper?

Here's the tHMap - I'm using the if then statement for output field Type, but since there's more types, they're being written as blanks or nulls. How do I exclude values I don't want? 

Here's the result of the test run. I don't want to write out the Type with blanks or nulls (highlighted fields on screenshot below). Is there a way to map an if then statement and then check if that same field has a value?   

[manodwhb]

You can exclude null values,for the blanks you need to convert blank to null.

[manodwhb]

You can exclude null values,for the blanks you need to convert blank to null.

[Edith1]

How would I remove null rows?  The mapper is writing the output as an array for that one column. 

[Edith1]

How would I remove null rows?  The mapper is writing the output as an array for that one column.