What exactly does the package of "vege gel" say? Is it pectin?
Yes pectin can be substituted for gelatin but you will not achieve the same results. Pectin or "vege gel" is not the same product as gelatin. Gelatin is gelatin, pectin is pectin.
You can also try agar powder, but again the results will not be the same as gelatin and you will need to experiment to achieve the result you are looking for.
Starch such as flour, corn starch, and taro root can also be used as thickening agents. Same comment - starch is not the same as gelatin. Nothing is the same as gelatin.
You will need to experiment to find the desirable conversion from gelatin to your gelling agent of choice, given your recipe, local ingredients and kitchen conditions.