How to use one atom snippet inside another without breaking the first one

Question

Since I learned about custom snippets, I've been using atom to write documents in latex. The thing is that I have a problem when using one snippet inside another and I cannot find any documentation about it. I'll give an example:

I've got two snippets to write the Earth's symbol and a radio vector (an X with a subindex and a superindex), that look like this.

'Radio Vector':
    'prefix': 'xrad'
    'body': 'X^{$2,$3}_{$1,$4} $5'

'Earth symbol':
    'prefix': 'earth'
    'body': '\\\\oplus'

Considering that I use ↩ to accept the snippet and ⇥ to jump from $1 to $2, I would like to write a radio vector in which the earth symbol is the first subindex by typing this ( represents the place where the cursor should be):

1. xrad + ↩ : X^{ , }_{ , }
2. earth + ↩ : X^{ , }{\oplus, }
3. ⇥ : X^{ , }{\oplus, }
4. ⇥ : X^{ , }{\oplus, }
5. ⇥ : X^{ ,}{\oplus, }
6. ⇥ : X^{ , }{\oplus, }

The problem is that when I hit ↩ in the second step, the "Radio Vector" snippet breaks, so when I press ⇥, it acts as a tabulator instead of allowing me to jump to the next step.

Thanks in advance!