The phrase 'helpful for this' is correct and usable in written English.
You can use it to indicate that something is useful or helpful for something else. For example: This new app has been really helpful for this project's success.
The "look-books" that you sometimes find in magazines are very helpful for this, and even the ads can help out.
All that stuff was helpful for this story.
Keep Wales Tidy were particularly helpful for this group in providing both material and intellectual support.
As this claim develops, it will be helpful for this distinction to be clear.
"I find it very difficult talking about it," he apologises, "which is not helpful for this conversation.
Yes, additional financing would be helpful for this act, but that alone does not resolve its serious flaws.
A basic familiarity with Judaism and Jewish culture is helpful for this course, but it is by no means required.
"Him coming in and having his input on the no-huddle has been very helpful for this offense," Bradford said of Norvell.
Machine learning has been helpful for this, e.g., in analyzing patterns within common responses, for generating automatic hints and guidance which are customized to individual learners.
In a telling early question, he asked Stephanie Toti, the lawyer representing the Texas clinic, if it would be "A) proper, and B) helpful, for this court to remand for further findings on clinic capacity".
A vector field, varying from point to point, is not always easily represented by a diagram, and it is often helpful for this purpose, as well as in mathematical analysis, to introduce the potential ϕ, from which E may be deduced.
