
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Xiao Ming designed a magic box. When any pair of real numbers $\left(a,b\right)$ is put into it, a new real number $a^{2}+2b-3$ will be obtained. For example, if $\left(2,-5\right)$ is put into it, $2^{2}+2\times \left(-5\right)-3=-9$ will be obtained. Now, when the real numbers $\left(m,-3m\right)$ are put into it, the real number obtained is $4$. Find the value of $m$.

Present the answer in LaTex format: \boxed{Your answer}
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